Should I use tsd or typings?

I am wondering what is the recommended practice by Angular Team? I couldn't find it anywhere in the docs, and I am wondering what are the differences between the two. Any insights are more than welcome!

tsd seems to be deprecated in favor of typings and Angular is moving to typings.

I have seen it mentioned several times that tsd is deprecated

• http://github.com/DefinitelyTyped/tsd/issues/269

• http://github.com/angular/angular/issues/6887

• http://github.com/angular/universal/issues/206
• http://github.com/angular/zone.js/issues/240
• http://github.com/AngularClass/angular2-webpack-starter/issues/323