Busy busy busy. Writing and helping to maintain a compiler is fun, but it also tends to hurt my brain. As a consequence of this maintenance work (and porting SBCL to Solaris) I still haven't had the necessary time to sit down and think about and start playing with using all the nice SIMD instructions on the x86 and ppc architectures to get sbcl to vectorize code. Maybe I'll take a sabbatical, after another three or four years of research in theoretical cosmology...
Still. We live in interesting times, given dan's threading thoughts, experimental Unicode support, and all sorts of advances from the cmucl camp, too.