Microsoft is slated to release 4 security bulletin for Windows Media Player, Windows, and Office. All four bulletins are rated critical.
The Windows bulletin includes Microsoft Windows, Internet Explorer, .NET Framework, Office, SQL Server, Visual Studio. Microsoft Forefront Client Security 1.0 is also affected when installed on Microsoft Windows 2000 with Service Pack 4.
You can get a broader overview at the company's advance notice page for September 2008.