There's something that nobody mentions in conjunction with this big E-M1 update. The other rumor about a big firmware upgrade for the GH4. They could booth drop on the 15th. Panasonic could have updates like the rumored RAW video or Log mode. Even if the Olympus receives all the upgrades it's rumored to, Panasonic could conceivably hold onto that top tier position right above the Olympus.