I'm a fan of the micro four thirds format, and the access it provides to lots of glass. Personally, I'm waiting to see what the GH6 looks like before deciding where I go next from my GH4. Frankly, the GH4 has all the capability I need aside from a bit more dynamic range at times, and better low light capability. A GH5S might be my next step, rather than the GH6 - but I probably won't be able to resist all the new bells and whistles...
I'd be more inclined to look at the Sigma FP than this new Sony camera, and be forced to change all my glass. Lately, I've been finding I'm even enjoyin