Released: June 2016 Quarterly Exchange Updates
Today we are announcing the latest set of Cumulative Updates for Exchange Server 2016 and Exchange Server 2013. In addition to normal fixes to customer reported issues, these releases also include updated functionality. Exchange Server 2016 Cumulative Update 2 and Exchange Server 2013 Cumulative Update 13 are available on the Microsoft Download Center.
Read more at source: https://blogs.technet.microsoft.com/exchange/2016/06/21/released-june-2016-quarterly-exchange-updates/