While searching for a PIC32, AVR32 or Propeller dev board I accidentally found the Raisonance STM32 Primers. They are nicely packaged (small platic casing) ARM Cortex-M3 systems with 128x126 and 128x160 colour displays dual USB and a host of other sensors and connectors.
Being relatively cheap they would be a decent platform for mobile semi-dedicated chess platform development.
Community: http://www.stm32circle.com/hom/index.php
Chess project with motion sensor for moves: http://www.stm32circle.com/projects/project.php?id=37
MvH Dan Andersson
Nice ARM platform.
Moderator: Ras