The third (and final) Service Pack of Office 2007 has just been released!
You can install it by using the standalone installer listed below or via Microsoft Update.
Service Pack 3 contains all previous updates and hotfixes and several previously unreleased updates. This also includes all Service Pack 1 and Service Pack 2 updates so you can directly apply Service Pack 3 in case you don’t have them installed yet.
After installing Service Pack 3, Help-> About Microsoft Outlook will show version number:
For instructions about how to create an installation DVD containing Office 2007 with Service Pack 3 slipstreamed into it see; Slipstream Office 2007 setup with SP3
Download: Service Pack 3 for Microsoft Office 2007 (KB2526086)
Download: Service Pack 3 for Calendar Printing Assistant 2007 (KB2526294)
Download: Service Pack 3 for Office Language Pack 2007 (KB2526086)
Download: Microsoft Office 2007 Service Pack 3 – All Products and Packages
Download: Microsoft Service Pack Uninstall Tool for Microsoft Office 2007