Dave Hatton, one of the Senior Systems Engineers here at Microsoft, just posted a blog post on our Partner and Customer Solutions blog about his team’s experience upgrading from System Center 2012 to System Center 2012 SP1 – Operations Manager.  The post has several useful tips for those of you that are planning out your upgrade.

http://blogs.technet.com/b/wincat/archive/2013/03/19/upgrading-operations-manager-2012-to-sp1-the-cdm-monitoring-and-management-experience.aspx