Microsoft has released the latest cumulative updates for Office 2010 and SharePoint 2010. 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.
More information: http://support.microsoft.com/kb/2639884