Unity MP: What to use as a patcher?

I would love to see a patcher for Unity multiplayer - cloud builds are just for testing, right? It would be great to have sort of what VIsual Studio does: Debug / Release builds. Debug build = what cloud build does now. Release build = goes to Unity cloud build and updates their patcher-that-doesnt-exist-(yet?).

Alternately, what to use as a patcher, and how to handle Unity packaging with it?

Or are people updating AT the login screen, then asking them to restart the game?

Tips would be...

Unity MP: What to use as a patcher?