The patch kicks off by opening up a 1940s New York harbor, complete with fireworks and era landmarks. Players can now sell modules packaged together with ships, fight on two new maps (including the Atlantic), permanent camouflage, a port for low-performance computers, and a special Japanese port through which players can access missions and ships from the anime Arpeggio of Blue Steel -Ars Nova-.
Read up on the patch notes on the site and check out the features highlight video after the break.
Source: Patch notes. Thanks to ThatLanteshGuy for the tip!