Cumulative Update 2 (CU2) for Microsoft System Center 2012 Configuration Manager Service Pack 1 (SP1) released. Isn’t that too early? You don’t need to install CU1 anymore for SCCM 2012 SP1. CU1 has been replaced by ConfigMgr 2012 SP1 CU2. More details about the CU2 KB article 2854009.
Prerequisite for CU2 is that you must have System Center 2012 Configuration Manager SP1 installed.
Added advantage of CU2 : Limited support for Windows PE 3.1-based images,
Administrator Console, Application Virtualization, Operating system deployment, Asset Intelligence,Mobile device management,Software distribution, Updated list of supported Linux and UNIX clients, Site systems error, Configuration Manager SDK, Client Upgrade Issues and Cumulative Update Setup Wrapper (Installer). More details here in KB article KB2854009.
Would like to know more about the installation process of CU2. Refer to following links.