Next scheduled release: May 14th, 2013
The heads up for this month is; On Tuesday 14th May (US time; Wednesday 15th May AU time) Microsoft expect to release ten (10) new security bulletins. Two (2) bulletins carry a maximum aggregate rating of Critical, and eight (8) are rated Important.
Today we’re providing Advance Notification of 10 bulletins for release on Tuesday, May 14, 2013. This release brings two Critical and eight Important-class bulletins, which address 33 unique vulnerabilities. The Critical-rated bulletins address issues in Microsoft Windows and Internet Explorer. Of note, we are working to have the Internet Explorer Security Update address the issue described in Security Advisory 2847140, supplementing the currently available Fix it. The Important-rated bulletins address issues in Microsoft Windows, Microsoft Office, Server and Tools, and .NET Framework.
As always, we will publish the bulletins on the second Tuesday of the month, at approximately 10 a.m. PST. … 
 Advance Notification Service for the May 2013 Security Bulletin Release (2013-May-09) [MSRC]