My guess -
One ship (I was betting the Magic until the Wonder's name popped up on the port schedule) goes to Hawaii, stopping at Oahu on May 6-7, then Kauai on May 7, before embarking on a voyage to to Asia with the primary destination being Hong Kong, since
DCL has touted its investment in China as being as significant or more significant than it's purchase of land in Florida many years ago. Prior to the tsunami, I was also betting that they would include a stop in Japan, which hopefully will still be possible given we're talking well over a year away, but who knows. Perhaps the ships stays over there and sails out of an Asian port for the summer, tying in the Asian Disney parks before reversing the process in September, with a final stop at Oahu or Kauai in mid-September before sailing back home to Galveston to start sailing modified Western Caribbean routes.
The other ship sails out of NYC, with perhaps some side trips to the eastern med. to satisfy all of us looking for Greece as a stop.
They could start sailing out of Baltimore to start driving interest in the planned resort at National Harbor that Disney was planning to build, but given nothing has started on that development, it won't be ready until 2013 or 2014 at the earliest. Baltimore would still give them easy access to the Washington DC tourist area, though DCL already tried and failed once to build a park in the area, so they could be gun shy of moving too quickly into the area.
Or, the 2nd ship could stay within sailing distance of LA, which would give DCL coverage of DL, WDW, and the Asian locations from it's various cruise ships.