The product group released the December 2012 Cumulative Update for the SharePoint 2007 product family.
The KB articles can be found at the following locations:
The Full Server Packages for December 2012 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 December 2012 CU
Note: The December 2012 CU for SharePoint 2010 should be available in a couple of days.