Apple has released OS X Lion 10.7.3 (11d16) to developers earlier this afternoon. This is the third update to the new Mac operating system.
The 10.7.2 update was released on October 12th, 2012 and was recommended to all OS X Lion users since it included support for the iCloud system Apple rolled out earlier this year. Downloading would allow you to sync photos, apps, documents and music between all your Apple devices powered by the iCloud storage platform.
OS X Lion 10.7.3 can be downloaded from Mac Dev Center.