Today the cumulative updates for October have been released for SharePoint Foundation and SharePoint Server 2010.

SharePoint Foundation: http://support.microsoft.com/kb/2553050

SharePoint Server: http://support.microsoft.com/kb/2553048

Take into account that for the Server Version you will need to restart the User Profile Service (as described in the KB) and remember, as with all CU's, test before applying to your production environment.