SQL Server 2016 should hit RTM sometime later this year. It includes several new features. You can read about some of the new features in my previous blog posts:
JSON support in SQL Server 2016
SQL Server 2016 also includes the R language for statistical computing and graphics. Here are some more details on the topic:
https://www.theregister.co.uk/2015/10/28/sql_server_2016_with_r/
