Exchange 2013 CU7, Exchange 2010 SP3 RU8, Exchange 2007 SP3 RU15, and UM Language Packs for CU7, were all released yesterday. These include important security fixes for vulnerabilities outlined in MS14-075.
There have been reports of RU8 breaking Outlook connectivity. Because of this, RU8 is being recalled, so expect an RU8v2. For more information, see the Exchange Team blog post that was updated today.
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