At a Sony PlayStation event
in Japan, SCEE President has just announced some details about the successor to the PlayStation Portable - codenamed the Next Generation Portable (NGP).
There's no official PR yet, but the basics are: : dual analogs sticks, a 5-inch OLED screen capable of 960x544 resolution, GPS, 3 axis movement detection, and a front and rear camera.
Portable versions of Uncharted, Killzone and some other big name brands will be launch titles, but stay tuned for more information. More details are available in the live coverage on the PlayStation blog
Update: the full press release is now available
and includes a photo of the device.