Denver's move to the BE is effective next season, while both the Big Ten league formation and JH's membership take place in 2015. I assume that means Michigan & Ohio St remain in the ECAC next year. What's unclear is whether Maryland & Rutgers will be joining them there on a temporary basis, or play as independents for a year along with Hopkins.
Regardless, some more shuffling is in the offing. The ECAC will be left with 4 schools in 2015 (Hobart, Bellarmine, Fairfield, Air Force), while the NEC will have just 5 (Bryant, Robert Morris, Sacred Heart, Wagner, Mt. St. Mary's). The CAA will drop to the requisite 6 once Penn State leaves (Delaware, Drexel Hofstra, UMass, St. Joe's, Towson).