A lot of hysteria being projected here based on a general Tweet...let's all keep the toilet paper on the shelves.
What is likely? DA is not going to leave all of its clubs hanging without a league for this next year---to begin a few months from now. If they are going to get out of providing a league, it will be a phase out and announced well in advance.
More likely is that they will announce a cancellation of the rest of this season (duh), and will keep their league operating, just make changes to rules/restrictions--eg, allowing high school. Maybe also expand the division system as they have experimented with in a couple age groups on the boys side.
ECNL has no incentive to let other clubs in -- they don't need 'em. Especially since their only competitor is floundering.
One thing for sure...look for clubs to try and get your money asap so you're locked in with them. As usual in club soccer, the kids are an afterthought. Advice to youngers parents...find another sport. The BS in this youth sport isn't worth it.