The SharePoint 2010 December 2015 Cumulative Updates have been released:
SharePoint Server 2010: https://support.microsoft.com/en-us/kb/3114408
Project Server 2010: https://support.microsoft.com/en-us/kb/3114405
Office Updates: https://support.microsoft.com/en-us/kb/3121650
Trevor Seward is a Microsoft Office Apps and Services MVP who specializes in SharePoint Server administration, hybrid scenarios, and SharePoint Online. He has been working with SharePoint for 16 years from SharePoint 2003 on up, managing environments with terabytes of content for 150,000+ user organizations. Trevor is an author of Deploying SharePoint 2016 and Deploying SharePoint 2019. You can find him on Twitter and in /r/sharepoint.