Microsoft has just updated the following KB Article:
Description of Cumulative Update 1 for the System Center 2012 R2 Configuration Manager clients for UNIX and Linux
Summary:
This article describes the issues that are fixed and functionality that is updated in Cumulative Update 1 (CU1) for the Microsoft System Center 2012 R2 Configuration Manager clients for UNIX and Linux. The Microsoft System Center 2012 R2 CU1 clients for UNIX and Linux can be used with both Microsoft System Center 2012 Configuration Manager Service Pack 1 (SP1) and System Center 2012 R2 Configuration Manager.
Full details at:
http://support.microsoft.com/kb/2957122