This is where DA is heading. It will spread down the age groups eventually. DA2 is going to be mighty unattractive, especially given the travel involved.
https://www.soccerwire.com/news/u-s-soccer-splits-boys-da-u-18-19-age-group-into-2-divisions/
Basically, it's the MLS clubs breaking off into their own league, but they added a few non-DA clubs to make it feasible logistically
https://www.soccerwire.com/news/u-s-soccer-splits-boys-da-u-18-19-age-group-into-2-divisions/
As first reported by Soccer America‘s Mike Woitalla and confirmed by SoccerWire’s sources, U.S. Soccer has split the Boys Development Academy U-18/19 age group into two divisions for the 2019-2020 season.
The Red tier will be the top flight, and will feature 36 teams, including all 22 MLS academies.
The Blue tier is set to include 44 teams in the second level of the U-18/19 age group.
Both the Red and Blue divisions will be competing across the East, Central, Frontier and West Conferences.
Basically, it's the MLS clubs breaking off into their own league, but they added a few non-DA clubs to make it feasible logistically