I haven't seen any libraries using the new context API make use of the observedBits prop (currently called `unstable_observedBits`, as its not officially supported). There's a comment in this library's codebase that hints that it will be used in the future. I wrote a bit about this API bitmask-based API a few months ago while I was experimenting with it[1], so I'm curious about its current state and whether others have experimented with it or know about its future in general.
[1] https://hph.is/coding/bitmasks-react-context