The NEX-7 has been rumored since the arrival of the NEX-5 and 3, and was always supposed to be a more sophisticated version of the small mirror-less camera design.
Whats more interesting to me is the impending announcement of the NEX-VG20. How will this differ from the existing model? Will it just be a chip upgrade? My guess is that it will also add 24p support, since nearly all of Sony's high-end consumer camcorders now support 24p. The other complaints about the NEX-VG10 were the menu control system, but I doubt that will change significantly. We shall see...
SonyAlphaRumors: (SR5) Huge Sony leak!!!
EOSHD: Sony NEX7, A77, A65, NEX5N and VG20 video camera to launch August 24th
The current Sony NEX VG-10