Welcome to Patch Tuesday, Windows 7.
Although the patch was released as part of Patch Tuesday, Microsoft didn't exactly highlight the fact it was updating Windows 7. The security bulletin summary that lists affected software references only Windows 2000, XP, Vista, Server 2003, and Server 2008, and it wasn't mentioned in the advance advisory Microsoft released March 5.
However, Windows 7 beta, Windows Server 2008 Service Pack 2 beta, and Windows Vista Service Pack 2 beta are mentioned in the accompanying frequently asked questions (FAQ) section of the TechNet bulletin specific to the update (MS09-006).
A Microsoft spokesman said Windows 7 wasn't included among the affected software because it is a beta version.
The Windows 7 patch was noted earlier on Wednesday by Ars Technica.