Cog VM Out
Squeak, Pharo, and Cuis now have a JITted VM option - Cog has been released. The link goes to the ftp site; the only announcement I've seen is the readme file there.
Update: As a commenter pointed out, there was an announcement, in both the Squeak and Pharo email lists. Here's a link to one of them (they are the same text)