I don't see a "self FAQ" anywhere on self.sunlabs.com, so I'll have the temerity to ask here whether or not a release of sources is ever planned.

All the sources were released last July, and can be found on self.sunlabs.com.

It would certainly help to make the language more popular if it were ported to architectures other than SPARC, no?

Sure would. Be my guest ;-)

Seriously, though -- we have done some work in making the system more portable, although it's not clear when that work might result in an actual, finished port.

-Mario