I really liked the Polymer demos from I/O, but stepping back, it seems an awful lot like React without the compatibility.

Polymer does appear to be more than just another Google flash-in-the-pan. They've got a good team, which is working closely with the Chrome team and Google's investment at I/O was significant. I wonder how the Angular folks are feeling.

Facebook is using React right now, when will Google put Polymer into production? Hopefully Polymer will get around to some practical compatibility. Otherwise I'll make a note in my calendar for 2016.