Japanese peripheral manufacturer Game Tech is creating a very ... interesting accessory for PlayStation Vita TV/PlayStation TV. The DEKAVITA7 is an add-on for the device that makes it portable. Equipped with a 7 inch IPS LCD, DEKAVITA7 runs for up to five hours and will be available September 17th for 23,000 yen. http://www.gametech.co.jp/preorder/dekavita7/index.html
The thing I don't understand is the price; 23,000 yen? That's like $190. You could (almost) buy a PSVita for that, and it doesn't even include the PSTV you need to use it.