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.
2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red