The original Kantai Collection PC browser game underwent a new update last 12 June, and this update added a few more thing into the game. The most significant one being that the Furutaka-class heavy cruiser, Kako, has finally gotten herself a Kai Ni
Kako Kai Ni will be armed with two 20.3cm (No.2) twin gun mount canons, a 25mm autocannon anti-air mount, and a searchlight as historically, Kako has been involved in many night battles during World War II… though she’s not as into it as a certain “Night Battle Idiot” ninja named Sendai. Admirals can give her her Kai Ni remodel at level 65 with no blueprint required.
Another significant addition made by the 12 June update is a new map, which is an extra operation for World 4. World 4-5 can be unlocked by clearing World 4-4, and when cleared, admirals can receive one oh-so-important medal as well as 180 ranking points. Type-3 shells are recommended in this map as the map boss, the Harbour Princess, is a Land Base-type boss.
The update also increased the luck for Isuzu Kai Ni, Kinugasa Kai Ni, and Verniy (Hibiki’s Kai Ni). It also allows two previously un-buildable equipment, the 8cm Twin High-angle Mount and the 15.2cm Twin Gun Mount, into becoming buildable equipment and also adds a few more equipment into Akashi’s improvement arsenal.
Source: KanColle Wikia