We all look forward to the publication of the itineraries in March or April, either on-line or in a brochure. However, in the last couple of years Celebrity Cruises have broken the mould somewhat by publishing their itineraries at this time of year, and they’ve done the same this year. Here’s a link to a “2017 Cruises” page on the Celebrity Cruises website.
Celebrity Eclipse will be doing various cruises from Southampton from April through to the end of October, and Celebrity Reflection, Celebrity Constellation and Celebrity Equinox will be offering cruises from various ports in the Mediterranean, again from late April/early May until late October/early November. Celebrity Silhouette will also be in Europe, based in Amsterdam for Baltic cruises in late spring and summer and moving to the Mediterranean in September for a short season until early November.
As for North America, the details I can see suggest that Celebrity Infinity, Celebrity Millennium and Celebrity Solstice will be spending the summer and early autumn in the waters of Alaska, British Columbia and Washington state, while Celebrity Summit will be shuttling back and forwards between New Jersey and Bermuda.