We kind of all figured this was coming:
McKenzie doesn't say when the hearing will be, but there should be a few days between now and the start of the next series.
I don't think there's any real surprise here. It should have been more than a minor, but the league appears to want to sort things out after rather than make the call in the moment (unless it's the Sharks vs. Golden Knights series, I guess).
There's precedent here: Joe Thornton received a minor for hitting Tomas Nosek in the head earlier this playoffs, and was then suspended one game after the fact.