I know Driver's Edge is one. BMWCCA might be another...got an email saying don't despair. That's all I know. SCCA and MVP were the only others that I'm aware of. Looks like the Driver's Edge will be first to go on 12/13 Jan. I know Rick mentioned that you have to be a previous, recent, and somewhat regular customer. Not sure what that means exactly. Then BMWCCA is in June with certain stipulations. And MVP is sold out.
The language sounds like once these 4 events are done, no more DEs. I will hazard a guess that COTA will look into running their own DE school at some point. It will probably be really expensive.