It's amazing how compelling that little Jupiter Ace was! That's also really the only reason I have such a soft spot for Forth. Also, the only place I can ever practically imagine using Forth these days is on the bare metal of a device such as the Pi.MEmerton wrote: He learnt Forth on the Jupiter Ace.
So, I have no interest at all in Forth running under Linux, or any other OS for that matter. However, Forth as a super-lightweight OS/language runtime environment with an easy-to-use editor like the Ace (instead of the horrible screen-based stuff) and a vocabulary of Raspberry Pi specific words... that's quite exciting.