(Updated with additional information from Apple) Just two weeks after Apple updated Mac OS X to v10.6.3, the company has released another minor revision. The company has not provided any specific details regarding changes in the 10.6.3 v1.1 update, although the latest version is approximately 65MB heavier than the previous download.
Mac OS X 10.6.3 v1.1 is now available directly from Apple's support site or via Software Update. [Standard download - 785MB] [Server download - 897MB]
Update: The v1.1 download also includes improvements from the v10.6.2 and 10.6.3 updates. Some systems require the supplemental update, which is listed in Software Update for machines that require the additional download. According to Apple, version 1.1 is for any system that was updated from Mac OS X v10.6 using the Mac OS X Update Combined v10.6.3, build 10D573, but not systems updated from v10.6.1 or 10.6.2.