* -- Vita looks like it will ship with Facebook, Twitter, Skype and Foursquare apps built in.

* -- Allows players to track their PS3 and Vita trophies in one place, as well as compare with friends.

* -- All Vita games will apparently be available for digital download as well as on the physical cartridge-based media.

There are also internet browser, group messaging and friends list apps, all of which are fairly self-explanatory.