Thanks for the heads up. Ours changed too. We are flying down on June 29 and back on July 6. The changes have us leaving Boston an hour earlier, and leaving Orlando 1.5 hours earlier. Neither change is a big deal for us, but my reservation did show all our seats as "unassigned". It took me 30 minutes on hold this morning (on the frequent flyer phone number) to get through to a rep and get the seats reassigned. Interestingly, the service rep told me that my seats were still assigned and still there but I just couldn't see them in the on-line account. She "cleaned things up" and then I could see them again. She said I would not have lost my seats even if I hadn't called.