Staff has posted a couple of different times in this forum that the intention is to make the switchover automatic if they can. That will depend on the device having a fingerprint which is included in one of the stock edge drivers. They’ve already started doing some of these for people enrolled in the official beta, with the usual glitches, but it does seem to be working for most people: many don’t even realize they’ve been switched over to an edge Driver at first.
You can find discussion of the potential automatic migration in the following thread:
Hub Connected Devices Now Use Edge Drivers
But nothing official yet on what the eventual process will be.