Microsoft has released SQL Server 2016 SP1 CU1 (Build 13.0.4411.0). According to the associated cumulative KB article, KB3208177, 63 issues have been resolved with this update. A number of them look to be pretty significant.
If you are running SQL Server 2016, you really should be planning on moving to the SP1 branch (if you haven’t done it already) because of all of the manageability enhancements that were added in SP1. Being on SP1 is even more important if you are running SQL Server 2016 Standard Edition, because of all of the feature enhancements that were added in SP1.