One of the largest updates in the past year is being prepared for release on Update Tuesday, 09 June 2009. This batch of update is made up of 6 Windows updates and 4 updates for other Microsoft programs (IE, Word, Excel and Microsoft Office).
Six of them are considered critical; three important and one is moderate. All of the critical issues are due to the possibility of remote code execution; the important ones relate to the elevation of privileges and the one moderate issue is related to the information disclosure.
These bulletins are a terrific way to stay up to date on security updates to your Microsoft software.