Sony Japan publish a statement confirming Amazon’s product listing note that the NEX-7, NEX-5N, NEX-C3 and a65 cameras will be postponed. It’s interesting to note that the a77 was not listed as delayed. No firm release dates were given:

Today Sony announced the a35 ($699) and NEX C-3 ($599-$649) cameras plus the 30mm NEX macro lens ($249) and the new F20S flash ($150). Sony describes the new NEX C3 as “the world’s smallest and lightest compact system camera”. Detailed specs of the new cameras can be found here. The new NEX firmware will be available on June 20, [...]
The new Sony a35 will have a new tele-zoom high speed shooting mode: A new set of 11 effects will also be introduced in the upcoming a35 and NEX C-3 cameras. They will also be available as a firmware update for the older NEX 3 and NEX 5 models:
An interesting size comparison diagram between the upcoming Sony NEX C3 with the NEX 5, NEX 3, Olympus E-PL2 and Panasonic GF2 cameras: