PrometheusDM

Not surprising for a photo-centric camera.
Not sure of all the 8k talk. Very unlikely that will happen in an A7 soon. No one wants it or needs it, or can barely edit it. 
I think the A7SIII will come this fall with 4k60 (8bit), higher MP. Up to 4k30 10bit external. That kinda thing. 
The one thing they have going for these models is the video AF. Incredible. Everything else is beaten by Panasonic. Just need Panasonic to sort out that grey area. It’s the only missing thing now, with eND. 
Nonetheless, you’ll be able to shoot great stuff on the A7RIV, no doubt. 

Enjoy!
 

I agree. Just like with the S1, Panasonic has built a body that can and will be able to handle heavier loads in the future. So while Sony will surely have to start from scratch to match even the 10-bit, 60fps S1 specs with the A7sIII body, Panasonic has already built a larger body with a vent and cooling system for even more intensive work loads than the S1 - the S1H. 
Which means we'll see at least 10-bit 4K All-I 400mbps, probably in 60p as well, plus the 6K already announced (hopefully in 10-bit H265 or compressed raw) and any other firmware updates they want to throw in there as competitors release their own high-end video hybrids - their system is already built for future processing loads. 
 

Yes, from day one. In foto is very good, in video sometimes it loose focus

The S1 always has eyeAF and animal AF with retail FW. Still has it with the latest FW 1.1
I'm not sure where you are from but in the US, you get free battery and grip when you pre-ordered ($430 value), 3 years extended warranty, and free VLOG FW update ($200). Current promotion is free MC-21 EF-L adapter and free VLOG update. I got the camera for $2250 via GreenToe, sold the grip, and got the price down to $2000.
I bought Canon 5D IV and EOS R and I have never receive any free accesories, VLOG upgrade or 3 years extended warranty. I also ordered A7III for a friend with my edu discount. It doesn't even include a wall charger or additional accessories of value.

Probably a case of sending your receipt to Panasonic by email or sending them your serial number, then they send you the Upgrade Key.
It's free 10bit 422 VLOG so probably worth a quick email, just my guess.
So $600 more than a Sony A7 III but superior specs in almost every category? Picture quality, colour, video modes, codec, frame rates, 4K 60, slow-mo 180fps, EVF, back screen, ergonomics, weather sealing, build quality, battery life, HDMI output (full size) and top LCD display?
Sounds like a terrible deal! Damn if only it came with a freebie like a memory card!

No one is afraid of the ghost A7SIII that doesn't exist.
Panasonic wanted to get the specs out in some form and let people know what's coming. Other companies have done this its just we don't all have butt love for Sony like others do.
The Lumix S1 is $2,497 just to be clear. You said $2,000 and that's not correct ( the firmware upgrade might be $2,000).......... No it's not all rainbow and lollypops on the EOS with false info. Carry on.
We get better upgraded technology on the S1H and all you do is complain.....smh

One of the reason why I'm active in this forum more is there are so many knowledgeable people. Most people stay objective unlike some toxic website that cater to a particular brand.
Competition is good for everyone. Whether you don't like  for its size, ergonomic, price, it's good that they are pushing the industry forward and should be commended - best EVF, best IBIS, 4K30 internal vlog with XlR audio all for $2000 I paid for it, -6EV, and great sensor.
If you consider what the S1 bring for $2000 that's crazy value compared to 1DXII or 5DIV days. I had a budget of $3500 for a new camera, and I got S1 for $2000.
There are some improvement I wish Panasonic do which is AF and eyeAF similiar to Canon & Sony. They also need better MC-21 EF-L to support AF-C. They also need to make the camera about 15% smaller. Otherwise I'm pretty happy I got the camera for $2000. It's the best purchase I made in the last 10 years. I sold my 5D IV for $2000. 

In Italy i have paid 3250 € for the Kit S1+24-105 with 4 years warranty and 1 spare battery. Now with the free firmware i find is a good deal...

Wow! That's a really nice move by Panasonic - really looking after us early adopters. Suddenly now, this is definitely the best value for money pro mirrorless camera at $2500 (or so). 

Confirmed. The firmware is free for existing S1 customers and new buyers until September 30th! 
Can't wait to get mine. 
I was an early adopter. Bought my S1 by April 4th, so got free battery grip, free battery, free 3-year extended warranty, and now free upgrade for $2500.
Bargain of the year! 

I have the S1 and plan to buy a second.
Here’s my reasoning:
I preordered then purchased at full price the S1 body/24-105 “kit.” The overall build quality of the amazing body and lens, BASE (pre-July firmware) specs and overall still and video performance justified that price. Plus, I received $300 off lens full retail when purchased as kit. Add a free $87 battery and $347 grip (improves portrait ergos and triples shoot time) and you have an amazing deal ($734 savings so far.) Add free warranty extension for two additional years and — wow! Add $199 film maker firmware update for FREE and I’m effing GRATEFUL! Add a second body for $550-$850 off with trade in and bonus (total) AND free film maker firmware AND 3 year warranty AND...
Total discount (not including value of 2 3-year warranties) when compared to buying all items separately:
2 S1 bodies, 2 firmware upgrades, 1 24-105 f/4, 1 extra camera battery, 1 S1 battery grip.
Retail total $7123. My total $5044!
And, we can expect 1600MB/s CFExpress compatibility at 1tb capacity.
And I have in hand passive legacy glass adapters for Nikon G, Nikon F and Minolta MD.
And Sigma native primes are coming.
And Kipon makes a Mamiya MF focal reducer.
Nothing YET from Metabones, but just imagine what they’ll offer based on prior offerings...
I could go on.
Seriously. How can everyone not be buying S1s?

Not everyone needs AF. Just as not everyone needs IBIS... what you really need is a camera that captures gyroscopic metadata and stores it with the movie file so that you can use software such as Reel Steady to stabilize your footage in post.
I'm often using motion controllers. I like to use the motors to drive zoom instead of focus.  With a reliable AF this works amazingly well. It's great for effortlessly creating parallax shots. 
I guess my point is, reliable AF gives you options... and can make getting the shot a little easier. 
 

What I'm proud for is reaction of user base, including this forum. Passion and seriousness, in spite of different angles and voices, I think that make serious corrective impact. It seems that S1 price now is mostly in the acceptable and balanced frame for those who, whatever the reason be, need FF - all of that exclusively due to corrective force of market.

Or Sony is deadly afraid of Panasonic.
Now that a $2500 Panasonic S1 offer free MC-21 and free VLOG update with internal 4K30/25 10 bit, 4K60 10 bit external. How will A7SIII exceed it for much higher price especially they got push back due to heat issues? Panasonic S1 will even cheaper when A7SIII is released. Panasonic is able to do this with a bigger body, can Sony do it for unlimited recording and similiar features?

Really without irony, I actually admire people that use AF lenses - every time I tried that, I find myself as stupid without possibility to directly communicate with lens... Also without aperture ring I'm lost. I feel lens as manual painting instrument - I sold nice collection of Contax Zeiss just because Leica R's set feels better in that regard

One of the reason why I'm active in this forum more is there are so many knowledgeable people. Most people stay objective unlike some toxic website that cater to a particular brand.
Competition is good for everyone. Whether you don't like  for its size, ergonomic, price, it's good that they are pushing the industry forward and should be commended - best EVF, best IBIS, 4K30 internal vlog with XlR audio all for $2000 I paid for it, -6EV, and great sensor.
If you consider what the S1 bring for $2000 that's crazy value compared to 1DXII or 5DIV days. I had a budget of $3500 for a new camera, and I got S1 for $2000.
There are some improvement I wish Panasonic do which is AF and eyeAF similiar to Canon & Sony. They also need better MC-21 EF-L to support AF-C. They also need to make the camera about 15% smaller. Otherwise I'm pretty happy I got the camera for $2000. It's the best purchase I made in the last 10 years. I sold my 5D IV for $2000. 

I'm glad and agree... just I'm little bit sad (and don't like at all) that buyers in USA have privileged price and offers in comparison with rest of the world. Also, I just can't quite understand voices that are in hurry to affirm any starting lust-price decision as "normal" or adequate, using endless argument of fan battles. In my mind, we all are cooperative and corrective force. As it can be seen, few months after S1 reached shops, price and offers are significantly changed... What than is the feeling of those who talked about appropriate initial price as they are owed to be manufacturer's ambassadors...

At least I include alot more detail than your blanket statement "Panasonic is the most expensive of the bunch... by a reasonable margin, asking $500 more than Canon or Sony" without taking into consideration of everything it has over EOS R. I was a Canon users for 10 years!
No it's not. I got it for $2250 with free battery and grip ($450), free 3 year extended battery, free vlog FW update ($200). After selling the battery grip, it's $2000. Bargain really compared to 1DXII/5DIII days of buying camera.
1. While 30 mpx is nice for cropping, 24 mpx isn't bad either. I  blow my image large to 24x36 no problem. I do it alot for weddings and I know plenty of wedding photographer do it for Sony A7III/A9. They have a 96 mpx mode if you really want the mpx.
2. I do wish Panasonic has better AF and eyeAF like Canon or Sony, but it's more than enough for me to do the job. Hopefully they get there.
3. S1 has -6 EV. I used it for 1 wedding already.
4. True. They have the best integration 
5. ND adapter - yes excellent use of the adapter but it's $400 for it. Not bad but it doesn't come free with the EOS R.
6. Robust codec? What does it has after the free vlog FW update? 
7. S1 works with EF lenses. I do wish they have AF-C but it's temp band aid until Sigma lenses available.
8. Great color science? As someone who shoot for 10 years, I find that is rubbish. Panasonic has great color. Heck even some scene, I find Sony to look nicer.
9. Size/weight. Sure if you want extremely portable package not 28-70 F2 or Sigma 105 1.4. For professional lens with 24-70, 70-200 2.8, it isn't much differences. EOS R doesn't have IBIS, better EVF, 4K 10 bit thus the smaller size.
10. Canon - that's all it take for you to buy? I say this from a Canon user of 10 years who own Rebel, 6D, 5D III, 5DIV, EOS R that is stupid to remain loyal to any company.
I switch to any manufacturers provide me with the best value propositions. This include electronic like smart phone, big screen TV, CPU, car. I don't go by legacy brand name prestige.  
There are things I wish Panasonic does better like AF/eyeAF, and better EF-L adapter support, but I am overall happy with my purchase.
I sold my 5D IV for $2000 and got the S1. It's crazy how much people value Canon and I get a great camera with IBIS, EVF, 4K, better sensor, and functionality.
I can see the appeal of EOS R, A7III, Z6 and S1. S1 is just better value for me since I don't value AF-C, 30 mpx, seamless EF lens support or ND adapter as much. If you do, enjoy it. I know what I need for my shooting style and S1 it is for me. 
 

You can get the FotoDiox ND Throttle Variable ND Filter to work with nearly Any camera. I have one and it works great, and they are cheap as hell.
And Sony's new AF is even better than DPAF. Canon, unless they come out with something amazing, and soon , is fast becoming a has been company. They are far behind.
The Canon ND adapter is a dust magnet more than anything. What the hell you suppose to stick in there if you Don't want a ND? I will give them credit for developing it, but it is an unfinished, half assed product.

oh lol
Got S1 and G7, but i m thinking getting G95 for 10-25mm, and sell S1 & R to get S1H
Well said, after coming from A7III to S1 the AF is acceptable for me, the new linear focus options is really great for manual focus, Sony one is just pain the ass unless you got expensive GM lens for MF.

There seem to be a few people happy with the EOS R, but there's no denying for most people it's absolutely rock bottom for mirrorless video (like all their other DSLR / DSLM) cameras when it comes to video. Even Fuji are miles ahead for video capture now. The frustration targeted at Canon is there for good reason., however it's best to forget about it. 
There's also a lot of talk about autofocus. Rightly so, this is absolutely fantastic for solo gimbal and I'd love to have PDAF in the GH5. Not having PDAF doesn't stop me shooting. However, A LOT of people have got really, really obsessed with it as if they've forgot to use manual focus (which I use 99% of the time). Manual lenses are way more fun! 
There's also a hell of a lot of bashing about the S1 cameras due to unrealistic expectations (requests for internal BRAW etc, what?). For video, there's literally nothing else like it and people are still complaining? 
We're spoilt for choice these days and there's something for everyone. Enjoy it! 

I think this is going to be priced out of reach for most indie filmmakers and jobbing one-man-bands.  Where I can see this being really popular is as a b-cam, tricky-corner cam, backup body, etc. on professional crewed shoots.  If I was DPing on something critical with a top end cinema camera, I'd really love to have something like this sitting in a bag on standby.  It looks like it's capable of being tuned to deliver footage that could live alongside top level stuff quite convincingly (based on how the S1 is shaping up).
I can't think of a better combo for that particular usage (which is big money if it really catches on).
Also, small productions (web series', multi-cam doc, etc.) might be interested.  There's a lot of money to be saved over full-blown cinema cameras, especially if you're buying several units.
I just can't see solo operator / owners coming in in large numbers.  So far, there's not enough to suggest value over the other fantastic cameras in the sector.  Plus, if you really need to step up in quality the fully-featured cinema cameras start to come into range for just a bit more.  Also, the inbetweeny market is starting to come to life a bit (Z Cam), so there's that temptation too.
I'm not so fixated on either FF or 6K as selling points.  Of course, I'm happy to take them if on offer, but give me a really super-functioning S35 camera at 4K and my money's yours.  The market as a whole may feel differently!
So far Panansonic's L-Mount offerings all seem perfectly interesting, but from a selling POV, a bit niche.  I hope they know what they're doing.

@DBounce the z7, a7rX, and s1r are high MP models, higher than most photographers need. Same as with more videocentric models, they have relatively special purpose, lower demand, so a higher price compared to the base model.

Any camera that allows you to get the job done and get paid is a pro tool imo.
Of course if you're doing high-end cinema, sports photography or have broadcast requirements, that may exclude most hybrid MILCs (at least as A-cams).
The C200 is definitely pro gear even if it isn't Netflix approved or has a broadcast-friendly codec. 
There is a indie feature film presented at Cannes festival this year making buzz that was shot on 4 C200s, another one last year was shot on couple A7S2s.