The bad news is: there was a show-stopper bug in the alpha, having to do with OID generation and transaction locks. (I guess that's why they call it "alpha" -- drat.)
The good news is: I've fixed it and a ton of other bugs, and added support for OpenMCL! (Thanks to Rafal Strzalinski for finding and fixing one.)
The bad news is: there are still some issues with MOP. Mainly, initforms are being evaluated at class definition time.
The good news is: those fixes will come soon too -- we're redesigning the slot allocation stuff, and we have to do some CMUCL-wrangling, probably.
In the meantime I've repackaged the 0.1 tarball with the fixes I've done. I've also started making a bunch of regression tests (which require the RT asdf package.) I'll make a more formal announcement (and bump the version number) once I finish writing the regression tests, testing OpenMCL et al and produce more docs. The impatient are welcome to try out the tarball of course. The MOP fixes might take some more time, but will happen soon.
Thanks for your interest, B