Headline says it all. Or most. Creighton is also "expected" to join, and Dayton and St. Louis in the future. That would make them the Catholic 11 Plus Butler, so it's probably for the best they get to keep the traditional Big East name. Getting to start the league this fall might also move Notre Dame to the ACC this fall as well.
I guess that just leaves the question of what to call the southern-oriented conference that was once the Big East. Big South is already taken. If it were up to me, the Phoenix Conference would be pretty cool.