Really excited about Portals. I work on a web app which was originally built with Spine.js (an MVC framework similar to Backbone). We've long moved on to React and Redux but have a few old views that have yet to be ported over. Portals seems like a nice way to refactor by incrementally replacing controller + template logic with components.

I'm also glad to see the switch to MIT license if only to put this patents controversy behind us. Now curious to see what happens with GraphQL...