You did book in October 2 years ago, but last year it was mid-Nov. My guess is that those who put together the itineraries and work out the logistics and contracts with the ports are probably still busy dealing with the number of changes these last rounds of hurricanes have required. For example, if making alternate plans for the upcoming affected Eastern cruises requires new contracts with new ports (just guessing, no insider info), then they would incorporate those in their future offerings.