CMUCL Release 20e has been tagged and binaries will be uploaded soon.

To build this, use boot-20e.lisp to bootstrap from the 2013-09 snapshot.

Of course, with the release, there will not be a 2013-10 snapshot.

For the release notes, see http://trac.common-lisp.net/cmucl/wiki/Release20e

Hope this is useful,

Ray