Just a quick note about the planned features for the R2 release, due out sometime in August/September:
New target: ARM Cortex M-3
New features: Several I/O drivers, including HD44780 LCD, joysticks and gamepads, and PS2 keyboard/mouse. Drivers are supported for AVR at the moment, but are written to be as portable as possible.
Kernel updates: Implemented thread removal. Stack element type is now defined based on the architecture selected, not just using byte arrays as in previous releases.