• New Roslyn-based codegen, compile time and run time
• Support for C# 6.0
• ASP.NET vNext style Dependency Injection for grains
• Core API for Event Sourcing
• Code adjustments towards CoreCLR compliance
• OrleansSQLUtils.dll for SQL-related functionality
• Most methods of Grain class are now virtual
• Orleans assemblies are not strong-named anymore
• Other fixes and improvements (including progress on CoreCLR compatability)