Recently I discovered this new.

The new gadget from GamePark Holdings (GPH), the Linux Console GP2X- 
F200,
will have a touch screen.

GPH build portable entertainment systems (and at low price), using LInux
as kernel. This new, with touchable screen.

http://www.gp2x.com/

For those who wants a portable device with touchable screen to,  
possible,
play with squeak.