At present, Thomas Cook (the Tour Op) will not run any SFB charters next summer from NCL, either using MON or any of their own metal. TOM will be responsible for all long haul charters, using their 767 aircraft in a 258 (think thats the split between premium and economy) config, which results in quite a capacity cut to Florida, as MON A330 had 350+ from recollection. Maybe TOM could consider adding an additional rotation, but again in these economic times, I very much doubt it.
It has also been mentioned but NCL will loose its weekly link to Canada, though some rumours place LS as the successor to this route, whther or not they or any other operator will step in remains to be seen.