Microsoft will release tomorrow a security update for PowerPoint

This advance notification provides the software subject (and possibly a number) as the bulletin identifier, because the official Microsoft Security Bulletin numbers are not issued until release. The bulletin summary that replaces this advance notification will have the proper Microsoft Security Bulletin numbers (in the MSyy-xxx format) as the bulletin identifier.

The following table summarizes the security bulletins for this month in order of severity.

For details on affected software, see the next section, Affected Software.

Microsoft Security Bulletin Advance Notification for May 2009