It's been ready for a while now, but I don't think we ever mentioned
it, so...
Clozure CL 1.2 is now available.
Clozure CL is is an open source Common Lisp implementation that runs
on PowerPC hardware under Mac OS X and Linux, and on x86-64 hardware
under Mac OS X, Linux, and FreeBSD.
Clozure CL used be called OpenMCL. It is also sometimes called CCL.
http://trac.clozure.com/openmcl has instructions on how to get it.
Release notes are included in the distribution, or at
http://trac.clozure.com/openmcl/browser/trunk/source/doc/release-notes.txt
(That release notes URL has "trunk" in it, but these really are the
correct notes.)