The product group released the October 2011 Cumulative Update for the SharePoint 2007 product family. October CU for SharePoint 2010 should be available in a couple of days.
The KB articles can be found at the following locations:
The Full Server Packages for October 2011 CU are available through the following links:
Related Update Centers:
Important: this is a Post-SP3 hotfix. It is highly recommended to first install Service Pack 3 of WSS 3.0 and MOSS 2007 before installing October 2011 CU