Microsoft released the quarterly servicing update to Exchange Server 2013 – CU13, second CU for Exchange Server 2016 and updated UM Language Packs.
You can read the full blog post at the Exchange Team Blog.
Exchange Server 2016 Cumulative Update 2 (KB3135742), Download, UM Lang Packs
Exchange Server 2013 Cumulative Update 13 (KB3135743), Download, UM Lang Packs