Sometimes a new Expo host app publication on the stores can be annoying for developers when there is a bug in the new update.
This has been the case for me today, as it looks like there is a bug on client app that prevents from using js remote debugging on Android, feature I really like for my development experience. (https://github.com/expo/expo/issues/1859)
I think using beta channels would be useful in such cases:
  • Expo could publish the client as beta, and then 3 days later publish for all
  • I could opt-in for betas to get fresh updates
  • I could opt-out for betas and re-install the non-beta app in case the beta annoys me
Currently as far as I know there's no easy way to rollback to former android app version (the one I was using yesterday was giving me better DX than the one I'm using today)