Today Microsoft released the October 2011 cumulative update for SharePoint 2010, SharePoint Foundation 2010, Project Server 2010 and Office 2010.
The cumulative update packages for October 2011 contain the latest hotfixes for the Microsoft Office 2010 core suite applications and for Microsoft Office 2010 servers.
We recommend that you test hotfixes before you deploy them in a production environment. Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous update package. We recommend that you consider applying the most recent fix release that contains the hotfix that you need.
The individual updates are available here: http://support.microsoft.com/kb/2618119
Rollup packages for SharePoint: