Having said that, the official roadmap (https://github.com/facebook/react-native/wiki/Roadmap https://github.com/facebook/react-native/wiki/Roadmap) mentions a

Having said that, the official roadmap (https://github.com/facebook/react-native/wiki/Roadmap https://github.com/facebook/react-native/wiki/Roadmap) mentions a navigation library should be coming in Jan, and the timing and people involved seems to line up with this project.