Scott Guthrie introduces ASP.NET 5 - cross platform, running on .NET core with baked in support for things like dependency injections, creating and using NuGet packages, environment based configuration.
Microsoft is releasing the CTP's at a good clip now. CTP 6 is live! This round includes single sign on, vastly improved debugging features and loads more.
A very detailed road map of what's in store for .NET in the coming future starting with the 5000 ft view in this image and breaking down into good depth.
You're learning Swift anyway... why not use it on .NET?