This will mark the last Cumulative Update for Lync Server 2010 as we are at the end of the 5 year main-stream support. This also means it is the start of extended support (end 4/13/2021). During the extended support period, we no longer provide Cumulative Update or hotfixes but still provide security fixes for the next 5 years. For more information about Microsoft software lifecycle, please visit the following link here.
To get the Lync Server 2010, April 2016 Cumulative Update, go to the following: