Booked ours too, Out on the 31st May back on 16th June, Pompey - Caen and back.
Slightly more expensive than last year but not by much, but then I did pick the standard fare which only requires a 50% deposit, last year, which was a rollover from the year that wasn't, was an economy fare.
Best to get bookings in early if you want a cabin and are travelling on popular dates!
Now just have to wait for the ACO to announce when tickets go on sale, September time I expect, unless they want to get the cash in early!