Version 1.1.12 of Steel Bank Common Lisp is out. As usual, compilation and installation on my OS X machines encountered no problems.
The new release features two enhancements (SOCKET-SHUTDOWN added, documentation for extensible sequences), two optimizations (EQUAL and EQUALP transforms are smarter and CHAR-EQUAL is faster for constant and base-char arguments), and a bunch of bug fixes (including getting SBCL to compile on Solaris x86-64). You can see the complete list on the NEWS page.
As always, I recommend SBCL to anyone looking for an excellent Lisp system. Combine it with Slime and you have the perfect Lisp “IDE.” I say perfect because Lisp is integrated into your normal editor1 in a natural way. You don’t have to learn a whole new editing system just to work with Lisp. I put IDE in scare quotes because, you know, Emacs users don’t need no strinkin’ IDEs.
Footnotes:
SBCL is excellent even if you aren’t an Emacs user. The only problem is you won’t have slime although there are solutions for Vim users as well.