Apple has released Mac OS X 10.7.3. You can obtain the update via the Software Preferences component of the Mac OS X Systems Preferences app.
According to Apple, Mac OS X 10.7.3 addresses stability, compatibility, and security issues. The upgrade includes Safari 5.1.3 and adds support for more languages, including Catalan, Croatian, Greek, Hebrew, Romanian, Slovak, Thai, and Ukrainian.
RAW photo compatibility has expanded to several new cameras. And, of course, there are various bug fixes.