Ok, it looks like I need to clarify a few points here:
1) The Linux version is for x86. I'll look into doing versions for other CPUs, but I can't promise this.
2) There will be at least one more update for the Amiga version, although I can't promise that all the features from the PC version will be included. (For example, the 16-bit renderer wouldn't work on AGA.)
3) As gnarly correctly stated, the Intent/DE version is for PDAs, the Linux/Windows version is aimed at the desktop. Intent doesn't support things like CDDA and hardware acceleration so this is why a seperate version is being developed.
Hope that clears things up.
Cheers,
James Daniels, Apex Designs.