Next scheduled release: April 09th, 2013
The heads up for this month is; On Tuesday 09th April (US time; Wednesday 10th April AU time) Microsoft expect to release nine (9) new security bulletins. Two (2) bulletins carry a maximum aggregate rating of Critical, and seven (7) are rated Important.
In celebration of spring’s onset, today we’re providing advance notification for the April 2013 release of nine bulletins; two Critical and seven Important. The Critical bulletins address vulnerabilities in Microsoft Windows and Internet Explorer, and the seven Important-rated bulletins will address issues in Microsoft Windows, Office, Antimalware Software, and Server Software. 
 Advance Notification Service for the April 2013 Security Bulletin Release (2013-Apr-04) [MSRC]