For those interested, Facebook has a site http://makeitopen.com blogging about how they build F8 (Reactive Native app for iOS and Android) for their recent conference. Advisable to read only if you have some basic knowledge of React Native. Too many techs: React, React Native, JSX, Flux, GraphQL, Relay, Redux, Flow, Jest, Webpack.
One thing that is not clear is their direction with Redux vs Relay. In the F8 app, they're actually using both in separate portion of the app. I understand the guy behind Redux is now working for Facebook. Are they going to combine Redux with Relay? Or build Redux+GraphQL? Both techs has seemingly similar use case.