I love the merchant selection which has been announced for the game.

Actually, I think it is more complete than any merchant selection from any previous subsim.

I am also impressed by the Japanese BB selection (4/5 BBs and both Ise versions), and the selection of CAs, CLs, and DDs is pretty good, considering time restraints.
However, the selection of Japanese CVs appears to be very poor, according to one preliminary report.

It looks like only the Hiryu, the Shokaku class, the Taiho, the Chitose class, and the Taiyo class CVE will be included (and the Chitose class may only be the seaplane carrier version).

I am hoping this report is wrong/incomplete, or at least that new ships can be added to the game - I will have a look myself when I get my own copy later this week.