.NET Framework Version 4.0  4.6.1
* WPF improvements for spell check, support for per-user custom dictionaries and improved touch performance
* Enhanced support for Elliptic Curve Digital Signature Algorithm (ECDSA) X509 certificates
* Added support in SQL Connectivity for AlwaysOn, Always Encrypted and improved connection open resiliency when connecting to Azure SQL Database
* Azure SQL Database now supports distributed transactions using the updated System.Transactions APIs
* Many other performance, stability, and reliability related fixes in RyuJIT, GC, WPF and WCF.