Microsoft has released the check list for Configuration Manager 2012 SP1 upgrades. Download the evaluation version of CM 2012 SP1 from here. Also, be aware of know issues of CM 2012 SP1 from here. Re download the CM 2012 SP1 if you’ve downloaded it before 25-Jan-2012. There are updates in the binaries. More details here. How to update client to SCCM 2012 SP1? What are the options available this will be the next challenge. More information on client upgrade to SP1 here. There is a Cumulative Update 1 for ConfigMgr 2012 SP1. CU1 resolves Known Issues of SP1. More details about CU1 fixes here.
Few Eye Catching Bullet Points
1. Top to Down approach. Need to upgrade the CAS server (if you’ve one) first then primary and it’s secondary servers.