AIDA is a rather unusual Carnival brand in that it is marketed only in a relatively small geographic area, but it is one of Carnival's strongest brands because that area (Germany) is Europe's strongest travel market.
So Carnival Corp is promoting the arrival (shortly) of AIDAnova and getting the word out because it is a rather important and unusual ship. It is the first cruise ship powered by Liquified Natural Gas (LNG) both at sea and in port. LNG is the cleanest burning fossil fuel, so it is going to be operating much cleanly than other ships of the same sizes (180,000 tons).
The complete story appeared in the September 4 issue of Cruise News Daily.