Microsoft has just updated the following KB Article
Description of Windows PowerShell changes in Cumulative Update 3 for System Center 2012 R2 Configuration Manager
Summary:
This article describes the Windows PowerShell issues that are fixed in Cumulative Update 3 (CU3) for Microsoft System Center 2012 R2 Configuration Manager. Other CU3 fixes are described in the following Microsoft Knowledge Base article:
2994331 Description of Cumulative Update 3 for System Center 2012 R2 Configuration Manager