Lots of the fine details have yet to be ironed out. I would be very surprised, however, if any of the old guard DO programs part ways with their precious COMLEX anytime soon. Any non-DO applying to AOA residencies will have to show some competency in OMT. Don't know how you could do that without some prior training like a dedicated symposium or something like that--DOs spend 300-400 curriculum hours learning it in M1-M2. I know for me it took me several months to wrap my head around most of the osteopathic concepts--I just didn't "get" it. Eventually parts of it clicked but I only use what I find useful for me. I also didn't apply to any DO residencies.