They will be doing the fitment/pattern on June 5, at Blue Ox. Hopefully we will have something by mid to late June. I prefer the BO plates to roadmaster, but that's just a personal preference thing, no quality issues. I've used BO on two previous Jeeps and believe it or not with an F350 that I towed for a short time (that thing was heavy and long) all with no problems or complaint. As to personal preference, I just like the BO's Asthetics better.
Any luck with Blue Ox on the base plate? I'm a new JKU 10 owner myself and just discovered the towing issue . . . I have a local dealer in California with inquiries into RoadMaster but no answers yet . . .