With the release of .NET Core 1.1 RTM, you can immediately start creating .NET Core 1.1 in Visual Studio 2015, Visual Studio 2017 RC, Visual Studio Code, and Visual Studio for Mac.
The following improvements are implemented in version 1.1:
.NET Core: Add distros and improve performance.
ASP.NET Core: Increase support and productivity for Kestrel, Azure.
EF Core: Support for Azure and SQL 2016.
More Please view full "Update log"