If you followed this from twitter, revision 2 is what I originally posted, while revision 3 is what I posted for the CounterList version.
I made a repo for this here: https://github.com/justinwoo/react-14-rx-fake-elm-arch
If you know how to do Flow-JS and are interested in adding to this code, please have a hand at justinwoo/react-14-rx-fake-elm-arch#1
Oh man love the use of RxJS!