Earlier this week Microsoft Exchange team announced the release of two important updates to Exchange Server 2010 and Exchange Server 2013.
Note: On Dec 15 2015 Microsoft release Exchange Server 2013 CU 11 and Exchange Server 2010 CU 12, you can read more Here.
Exchange Server 2013 CU 10 released:
Includes general fixes for reported Issues, Security updates and products Improvements
Exchange Server 2010 RU 11 Released:
Includes one fix when the Information store crash after upgrading Lync server to skype for business
Both updates do not update the Active Directory schema.
Exchange 2010 download link:
Exchange 2013 download link: