I'd be surprised if any region does not have JD sessions at regionals. As the program grows, in some regions they may eventually need to make it a separate meet, but I'd guess every region this year is just rolling them in with optionals. I don't know how it's going to work, but there will also be a national invitational for JD guys this April.
I just hope that for JO/JE nationals, they do something so that we don't have another year where half the L8 guys make it and a third or fewer of the L10s. If my child were L10, I would be fine with having him compete in a Sunday final session if it meant he had a better shot of making it to nationals. I understand that the main problem is getting all the sessions to work, and it's easier if they have L10 Thurs/Sat (with the 15/16 year olds and the 17-19 year olds) and L8 and L9 Fri/Sun (with a small number of 11 year olds and the larger group of 12 year old L8s and the 13/14 L9s). But why couldn't they, for instance, cut out one of the L8 sessions and sub in the 15 year old 10s? 15/16 are only together for JE, right? (I'm sure there's some obvious reason they can't do this.)