Is that to say that when I do my AOW this summer (that's the plan, anyway) that there's going to be an eRDPml in the crew pack or that I'll be expected to buy one because my eRDP won't be good enough anymore even if multilevel is NOT one of the dives my LDS does during the course?
You should still have your PADI RDP table. You just need one of them, the RDP, the eRDP, the eRDPml, the Wheel (which as was pointed out they are getting rid of). It doesn't matter which one, so long as you have one to use for planning your dives.