More info: http://www.engadget.com/2011/06/06/sonys-playstation-vita-official-3g-available-only-through-atandt/
In this video I give an overview of the Sony PSVita, the successor to the PSP and previously known as the NGP. The Vita keeps the same specs as it had previously with a 5 inch OLED touchscreen, quad core processor, six axis motion control, front and rear facing cameras, a rear touchpanel and both Wi-Fi and 3G models. Sony also showed off several PSVita games at the E3 2011 press conference including the Uncharted: Golden Abyss, LittleBigPlanet, Street Fighter X Tekken as well as a version of BioShock.
Now there is both a release date and price. The Sony PSVita will be available later this year for $249 for the Wi-Fi model and $299 for the 3G model.