Just a reminder that in the C# world you don't really have to care about new language features. Visual Studio, ReSharper, and Rider (supports MacOS/Linux) will suggest useful new language features as a one-shortcut refactoring.

A C# developers who went into coma in 2012 after learning about async/await and ASP.NET MVC can be awakened today and be instantly productive. Although he might go into coma again if he finds out .Net is now open source, cross-platform, and that we deploy to "Linux containers".