Some of these posts by accusatory people with fewer than 100 posts read like they have an ax to grind.
Give me a freaking break. I've been around the block using several different DSLR and mirrorless systems. Ask CuriousMike if I'm a Sony sales guy considering that I advised him to NOT get an a6000 but to stay with Nikon. And that's despite my being a Canon and Sony user for the last few years. Hell, I have more Canon lenses than I do Sony lenses.
How can anyone who wants mirrorless conveniences like EVF (and the live histogram, focus peaking, level, and everything else that comes with it) NOT be enthusiastic about what may effectively be a mirrorless full-frame Canon body that can take Canon EF lenses (which many people already own), Sony/Minolta A-mount lenses, Nikon F lenses (via adapter, MF only), etc.? AND it can take native E-mount lenses when you need portability.
Many people have waited a long time for SOMEBODY to come out with affordable full-frame mirrorless, and it just happens that Sony got there first... and if it can take people's existing full-frame lenses then the cost of trying it out declines even further since you don't need to switch over all your glass immediately. If the sticker shock dissuades you then you probably don't need the camera and can wait some more. No big deal. But to some people this camera would be a bargain--and a harbinger of things to come.