Cumulative Update 7 for Microsoft Dynamics NAV 2015 has been released today, one hour ago. It includes the most of application area (Administration, Cash Flow, Client, Finance, Fixed Assets, Inventory, Jobs, Manufacturing, Purchase, Sales, Service and Warehouse) on almost 80 objects and very useful platform hotfixes and regulatory features that have been for Microsoft Dynamics NAV 2015. If you are upgrading to this cumulative update (CU7) from a cumulative update earlier than CU4 (build 39663), you first must convert the database.
It also has a lot application hotfixes for following localizations: Australia, Belgium, Switzerland, Czech Republic, Germany, Spanish, France, Italy, North America, Netherlands, Norway, Russia and Sweden.
You can download Cumulative Update 7 for Microsoft Dynamics NAV 2015 from here. This CU is named as Build 40938.