A key feature of AngularJS 2.0 is its support for Web Components . Google’s Polymer is a Web Component polyfill (enabling them on all current browsers) and a framework on top of Web Components. This blog post describes how the Angular team sees the roles of AngularJS and Polymer.
The roles, according to the AngularJS team
AngularJS 2.0 team member Rob Eisenberg recently explained the relationship between AngularJS and Polymer: