This is an advance notification of two security bulletins that Microsoft is intending to release on November 13, 2007.
As posted to the MSRC blog:
As part of our regularly scheduled bulletin release, we’re currently planning to release two Microsoft Security Bulletins affecting Microsoft Windows with a Maximum Severity rating of Critical. These updates will require a restart and will be detectable using the Microsoft Baseline Security Analyzer and the Enterprise Scan Tool.ÂÂ