Steel Bank Common Lisp 1.2.4 has been released and is available at the usual place. Check the NEWS page for what's new in this release (mostly some improvements in how certain sequence functions are implemented).
As usual, there were no problems building the distribution or with the regression tests. Things just work.
Even if you merely want to play around with Lisp a bit, SBCL is a good choice. It's got plenty of tools and is easy for a beginner to use. When you're ready to move forward, SBCL will be right there with you. Plenty of serious, professional Lispers use SBCL as their Lisp development environment.