NYRB II has won the league, next up is USL Cup. But it doesn't yet know who it will play in the first round of the playoffs. That will change soon.
The USL Eastern Conference playoff field is almost set, at least in the sense that we know seven of the eight teams that will be in it: New York Red Bulls II, Louisville City FC, FC Cincinnati, Charlotte Independence, Richmond Kickers, Rochester Rhinos, and Charleston Battery.
Of those seven, we know NYRB II has won the East (and the league) and will have home advantage for as long as it is in the playoffs.