Thanks to Germano for the heads up on this
It appears Microsoft have released a small patch for Office 2003 Beta 2 for "Internal Microsoft users only". The patch found on Office Beta Update only updates MSO.dll. This dll was used by "crackers" to sucessfully by-pass product activation in Beta 1. Maybe Microsoft are making sure they are ready for any kind of "cracks" that might appear after Office 2003 goes final.
Office 2003 Beta 2 patch for MSO.dll (English version)
37 KB / Download Time =
This patch will update the 4920.7 build of Office 2003 to build 4920.7a, the official Beta 2 release. This patch is intended for internal Microsoft users only.