Sony just announced a new revised LED screen PS Vita which will be available this year (in Japan on October 10th 2013) and will cost around 14,000 yen which is approximately $150.
The new PS Vita is lighter, slimmer, comes in various new colours, has a 6 hour battery life and comes pre-packed with a 1 GB memory card. Early adopters will also be able to pick up a free 3 month Playstaton Plus subscription. Take a look at the trailer and images.
http://youtu.be/_TkOdFbj1Eo