XAMOS alpha 0.29 is now available, with a fresh new MorphOS build ready for download:
http://sourceforge.net/projects/xamos/files/

One new feature in this release is the ability to quit by pressing ESC or CTRL+C, which is very useful in fullscreen mode (selectable from PowerSDL options on MorphOS).

Incidentally, XAMOS is now running on 10 platforms, the latest addition being RISC OS (including the fruity RISC OS Pi).