I forgot to mention that SBCL 1.1.13 is out and ready for download. There are some bug fixes, a few minor enhancements, and a couple of optimizations for SXHASH. You can check the release notes to see exactly what’s changed. As usual, you can get the new release at the SBCL download page.
As I’ve mentioned before, I like to build it from source each time. Unless you’re using the Linux binaries, that’s required if you want the latest release because the prebuilt binaries always lag behind on the other platforms. I was pleasantly surprised to have no problems with the build. That’s usually the case, of course, but I just upgraded to Mavericks and past major upgrades always required loading the new XCode and then getting the command line tools. This time, OS X just asked me to agree to the XCode license and then went on with the build. No muss or fuss at all. You do have to do the build with a sudo, though, because the system requires you to be root to agree to the XCode license. Presumably further builds under Mavericks won’t require root privileges.