Found by SFC_Storm
Summary: Black radar was nerfed, Indianapolis rate of fire was buffed, Russian DDs got the 1900 HE Damage back, New Mexico/Colorado got upgraded AA, and Khabarovsk is getting a repair.
Clarification from beachedwhale1945:
Regarding the US BB AA changes, that appears to be an error. The old C hull is becoming the B hull, and the B hull is becoming the A hull. If you look at the gun changes, from the current New Mexico B to C you trade the .50 Brownings for single and twin Bofors and single and twin Oerlikons, a perfect match to this image. The same is true for Colorado: B hull trades 1.1″ guns for twin and quad Bofors on the C hull.