The PS Vita is out in Europe and America!
Finally  it’s here, Sony's answer to Smartphone- and Tablet-gaming, the PS Vita.  But it’s pretty more than just a device for gaming. It combines  everything about connecting players, which includes also social media  with Facebook, Twitter, Flickr and even Skype. Sony also introduced a  new application called “near” where a player can locate other players  which are close to them.
The  interface is completely different from the well-known XMB  (XrossMediaBar) which was introduced with the first Playstation Portable  in 2004. It looks more like an iOS or Android System and navigating  through it is pretty similar.
They have  also integrated a music player, a better internet browser with html5  support and a photo viewer. There are two cameras  – one on  the back and the other on the front of the device. While the camera  on the back can be used as a part in augmented reality games, the  front-camera is useful for video-chats on skype-session with your friends. 
New and very special is the rear-touch panel which enables a never seen  gameplay for casual- and also core-gamers.
Source:
http://uk.playstation.com/psvita/