Today was supposed to be the day that Microsoft was going to test Windows Update for Windows 7 Beta users by releasing several 'test' updates.
It turns out that several of the updates delivered to beta testers today were, in fact, real updates.
Note: Users were not 'automatically updated'.
In Windows 7 (Build 7000 with a valid key) , it's a simple matter of opening the Control Panel, then opening the integrated Windows Update screen and tapping 'check for updates' in the upper left corner.
Most users will be greeted with a quick 10.9 MB of system updates. While some are the promised 'test updates', others include fixes for non-compatible programs as well as a security update.
This latest 'Update Tuesday' also included are variety of updates and patches for Windows Vista, Windows XP, Windows Server 2003 and 2008, and even an autorun fix for Windows 2000.
In the US, you can check out the list already posted in the Microsoft Download Center here.
Update 1: Late Tuesday, Microsoft added an additional Windows 7 update (for Silverlight) which can be downloaded and installed in the same manner.