I’m pretty sure there will be an update for the NEX-5N as well, especially with lens compensation for these announced lenses that aren’t available right now.
But so far the firmware updates for NEX-5, 3, C3, VG10 & FS100 need to bring the lens compensation feature already implemented in the 5N plus at least some of the advanced movie features from VG20 to VG10 and from 5N to 5/3/C3, possibly also ISO 100 and hopefully more customizable softkey functions either. AVCHD 2.0 would be really big, but I doubt that, and something I’m really hoping for is ISO displayed in Auto mode…