It is a bit disappointed to learn from the official information that the NEX-7 whilst is not too heavy (but just a bit, in 350g with battery and memory card), I'm afraid that its size is just a bit too large.
In 12cm wide, 7cm tall and about 4.3cm thick, I think whilst it is yet relatively small when compared with DSLRs, I am almost sure that no one would call it small for an ILDC! :-(
Another look at the product images and comparison at the Alpha Mount World that the NEX-7 is really much larger than the NEX-5. Whilst the NEX-7 does contain also the additional EVF and built-in flash plus the hotshoe also in an "all in one" package, I am afraid its size is just too bulky after all:-
So, similar to what I asked the last time about the micro-4/3, IF size really matters, what is the point of the NEX-7 now? Just some food for thought anyway. Also considering that the new Zeiss 24mm/1.8 E-mount lens is considerably large in size as well..
Update (8-25): Look at this (official Sony?) demo video and we can have a better idea about the sizes of the NEX-7 and new lenses when they are put in hands:-
(URL: http://youtu.be/a-sFeGaVqQ0)
Related:-
If Size Really Matters, What's the Meaning of Micro-4/3 Now?