MLB has revealed the 120 MILB teams that will survive...
Behind a paywall on BA. My home team survived as a Nats affiliate; the F-Nats were kept but dropped down to Low A; and the Nats' other affiliates will be Rochester (AAA) and Harrisburg (AA).
Wilmington will be in the new Advanced A Mid-Atlantic League that will include at least Wilmington, Brooklyn (NYM), and Hudson Valley (NYY). The Orioles' Aberdeen Ironbirds will likely be in the league as well, as will the Phillies' Jersey Shore Blueclaws.
Frederick got screwed - they're in the MLB Draft League. Hagerstown has no affiliation at all at this point.