You know, in Titans Tomorrow when Tim and... Tim were in the Drake Manor graveyard, one of the headstones had the name "Carrie Kelly" on it. Kon and Bart are back, Tim is headed for Crazyville, and Aquagirl is on the Titans, so it's entirely possibly DC is secretly setting up Titans Tomorrow as a possible future, up to introducing Carrie into the mix. (Of course, Duella Dent it dead now, but like that's stopped anyone in a comic book.