Microsoft has released Update Rollup 1 for System Center 2012 R2, covering everything except Endpoint Protection and Configuration Manager (they’re almost a separate group).
As usual with update rollups, I would caution you to let others download, install, and test this rollup. Don’t approve it for deployment for another month. And even then, make sure you read each product’s documentation before doing an installation.
Those who lived through URs over the last 12-18 months will remember that System Center had as bad, if not worse, time than Windows Server 2012 with these Update Rollups.
Update Rollup 5 for System Center 2012 Service Pack 1 was also released. The same advice applies; don’t deploy for 1 month and let others be the guinea pigs.
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And not addressing Service Manager as well, I guess even they can’t code against SharePoint 2013