new model ships

Yes, Revell did some box scale US cruisers, as did Monogram, Lindberg, and Renwall. Aurora did one in 1/600 I believe as well. 

But, for a 1/350 US WWII cruiser, Trumpeter has announced upcoming releases of USS Baltimore and USS Pittsburgh. Or there are also the Academy & Trumpeter kits of USS Indianapolis, and Trumpeter USS San Francisco already available.

Hmm;

 I know of no one that does .I may be wrong .Now , I do remember REVELLS old Cruiser offerings of probably 1/535 or 1/400 .

As GM said, the 1/350 kits of the Arizona are from the same molds.  If you are interested in converting one to the USS Pennsylvania, Shapeways offers an excellent conversion set.

Bill Morrison

Answer to the second question. The Banner, Trumpeter and Hobby Boss kits of BB-39 in 1/350 scale are all the same kit.