On January 18th, Skype for Business announced the release of Lync Server Cumulative Update. This January update is now available for business customers.
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http://go.microsoft.com/fwlink/?linkid=285592
What's New
In this update, we are happy to announce several stabuilzation fixes including support for E.911 in Skype for Business on Mac. For more information about this CU, please see the following Knowledge Base article: https://support.microsoft.com/en-us/help/2809243/updates-for-lync-server-2013
Updated Jan 27, 2017
Version 2.0