SQL Server 2016 CTP has been released by Microsoft. SQL Server 2016 comes with In- Memory enhancements and Advance Analytics. The couple of enhancements for SQL Server are related to performance, security upgrades and scalability. You will get more information about the new version from the datasheet.
You can download SQL Server 2016 Datasheet from here.
You can also download SQL Server 2016 CTP Version from below link.