As for specifications, it will have 1 GB of flash memory along with a Memory Stick Pro Duo slot. The 2.4 inch LCD screen will measure 320 by 240 pixels. Overall size will be about 4.9 x 2.5 x 0.96 inches. It is similar is size to the PSP and the T-Mobile Sidekick 3.
A few additional details: The expected release date is September when you can purchase either a white or black version for around $350.
News Source: Gizmodo