Do Costa update websites very often?

I've been trying to find a Norwegian Fjord by a Costa trip for the last few weeks. I've tried http://www.costacruise.com, http://www.costacruise.co.uk, and, finally, http://www.costacrociere.it. It seems like I found my cruise on the Italian website, embarking on May 31, 2017, aboard the Costa Magica. However, the other websites still doesn't show the 2017's. Does Costa updates their website this haphazardly?

In general Costa do not allow booking of cruise beyond six months although sometimes you can see the cruises advertised, except for direct booking with an agent.

I know the ship I want to cruise on for Christmas this year, know where it sails from, know roughly how much, yet can't bring up full details.

Even direct through Costa she said cruises are not finalised

I have had this same issue, and I was told each market received only a certain number of rooms to sell, and that I should try and book on another website.

I have had this same issue, and I was told each market received only a certain number of rooms to sell, and that I should try and book on another website.

Costa prices seems highest on the USA site. I would like to book on another site, for example, the UK site but I believe I would need an UK address.:(

I use the Costa's German and Austrian site without hassles.

I have had a look a their Italian site. They are obviously releasing their 2017 cruises piecemeal. I was disappointed to see (or not see) a ship home porting in Stockholm for 2017 but I now see on the Italian site only that Mediterranea is heading to Stockholm and plying the route that Luminosa had been doing for the past 2 years. neoClassica is replacing Mediterranea on the Adriatic route.

I wonder will they ever home port a ship in Crete / Rhodes and do the route that Mediterranea used to do way back.

There Western Med itineraries are brutal - Barcelona, Marseille, Savona and Civitavecchia appear on almost all with Palma de Malloca, Palermo, Valetta and Napoli also featuring heavily.