GR2 wasn't announced because I'm pretty sure it takes time to port a game to the PS4. :P
Jokes aside, I think it was an amazing conference for Vita.I wasn't expecting Sony to even mention the system. Although I'm happy that at least in Japan Vita is getting some love, I couldn't agree more with Scisca: I'm more excited for Salt and Sanctuary.
So Sony is still going to have a TGS Conference, I wonder what kind of announcements they are going to make. Maybe a Vita redesign? Maybe they will announce the Vita 3000?