I recorded a Dev Super Powers Webinar on using AngularJS with TypeScript last week. When I finished the session I thought "I wonder what will happen with AtScript and TypeScript?" So when the Angular team announaced they are going to use TypeScript to build AngularJS 2.0 I was very happy :)
If you want to be AngularJS 2.0 ready and start using ECMA Script 6 features today then TypeScript is going to be a great tool for you. I am excitied to see what the Angular Team bring to TypeScript so watch this space as TypeScipt 1.5 is released in the following weeks.