Some very quick info that we came across regarding the latest release of Vista SP1 to testers. As Mary Jo Foley previously reported, Microsoft have indeed made the latest build of Vista SP1 (6001.16633) available as a standalone update file to testers.
Build: 6.0.6001.16633 (longhorn.070803-1655)
Surprisingly, the update file is in the .exe format. Many (including myself) were expecting Microsoft to deliver the update for Vista SP1 in the the new Vista/Server 2008-only .msu format used for current Hotfixes.
Microsoft, Windows Vista, Vista SP1, Build 6001.16633