Did you watch the video? They're taking a genuinely new approach here. It's not "lowest common denominator" like Xamarin, Qt, etc, and it's also not a WebView like Atom or Ionic (Cordova).
It's actual native components, with the intent that you "learn once, write everywhere" rather than try to jam iOS and Android into the same codebase.
It's actual native components, with the intent that you "learn once, write everywhere" rather than try to jam iOS and Android into the same codebase.