Looks like a great camera, but having recently sold my Nex 5 gear, I'm not going back. If they ever figure out a way to make really nice lenses size-competitive with m43, I'll give Nex another look, but for now, m43 is just a much better set of compromises for me. The IQ is good enough for me, I like broad DOF at least as much as narrow DOF (so I actually prefer the m43 sized sensor for a lot of uses), the lens choices and scale is great for me, the performance of the new cameras is all I'd ever want, and the UI works for me. I'm sure the Nex 7 will hit on all of those points except for the broad DOF and the lenses and the lenses are the real issue. As great as I know the Zeiss 24 will be, I don't see that combination adding anything to the X100 at nearly twice the price and I already have one of those... And that lens is a lot bigger than I'd want on that size body (which I think will STILL be very nicely small) and I don't see much chance of future lenses being much smaller. So, I'll have a look at the Nex 11 or 15 (guessing they'll skip the 13) after the lens lineup has a chance to mature, but my guess is I'll be sticking with a smaller system like m43.
But I'm REALLY glad Sony is out there pushing the envelope. Unlike a lot of folks, I LIKE what they're doing with the UI, starting from someplace close to scratch, rather than toeing the line to conventions and hitting more than they're missing IMHO. And they're pushing all of the other makers as well. I don't think we'd have an EPL3 without Nex, so I hope they and Nikon and whoever else really gives Oly and Pany a good push for years to come.
-Ray