I guess it isn't too early when you consider who is actually behind Aurelia: Rob Eisenberg. If you have used Durandal before, then you will know what I am talking about. I have no doubt in my mind that Aurelia is going to shake things up. Just having a play with it earlier gave me a sense of excitement that I remember getting when I first used Angular all those years ago.
I get the impression we're dealing with a framework that is based in part on Durandal, so it is not an entirely new framework in certain aspects (I could be wrong). And on the plus side, Rob has proven himself as an effective leader on projects like this and during his time on the Angular 2.0 team, he was doing some great work.