Shai-Tan
Banned
The Vita will have much better connectivity to the PS4 than PS3. It will be present only in this form, just to show case the connectivity between the 2 devices.
As far as games, i am expecting Sony to announce (leaked) GR2, Uncharted something maybe some other games at Playstation Destination at the end of the month.
Assuming there aren't any hardware issues on the Vita side. I wouldn't be surprised if good game streaming required a new Vita model with a better wireless radio.
edit: top of the page recommendation - Dokuro is a fun puzzle performer with short ish levels; and don't forget to download Aqua Kitty for free from the PS Mobile side of the store before the update tomorrow