The Zipit 2 Wireless Messenger is a small linux-based wireless device marketed to teens. It has a backlit color screen, wireless, full keyboard and sound.
It's stock configuration is primarily designed around instant messanging, viewing pictures, and listening to mp3.
There is 32MB of RAM and 8MB of flash onboard.
It supports Mini-SD so you can expand storage to 8G
Processor: Intel Xscale NHPXA270 Datasheet
Wireless Chipset: Marvell 88w8686
According to the manufacturer, specs and source will be available soon.
http://zipitwireless.com/linux.html
There is a Yahoo! group for the original Zipit Messenger that has some posts about the Z2, but there has been little hacking done so far (it just started shipping this month)
http://groups.yahoo.com/group/zipitwireless/


