Looks like MS is patching holes big time ahead of the holidays. They've silently released Office 2007 Service Pack 1 to the public with Vista Service Pack 1 and Windows XP Service Pack 3 release candidates also making appearances on the web. First Service Pack for Office 2007 addresses a number of bugfixes and minor feature enhancements.
Click here to visit official download page for Office 2007 SP1 (Download Size 218.3 MB).
Click here to read a description of changes and bugfixes in Office 2007 SP1