For those who like to be a bit ahead of the curve, here are two opportunities!
Holland America has announced it's taking reservations for the first cruises on its new flagship, MS Koningsdam, which will sail in February 2016. It's assigned to cruises in the Mediterranean, with one-week and longer itineraries. MORE
You'll have to wait a little longer, though, for Seabourn's new offerings. They are in the "ultra-luxury" class, so you better start putting the pennies aside, anyhow. Seabourn ordered a pair of these ships, one for delivery in late 2016, the other in 2018. MORE
Interesting note: Both lines have turned to the same designer to create their interior spaces: Adam D. Tihany.