5 New additional flags have been added to the client this patch.
-Azur Lane, Azur Lane Hipper, and Manjuu are flags all part of the Azur Lane collaboration, and can be earned through in-game events and the premium shop.
-Halsey – This Flag will be flown on vessels who are commanded by Admiral Halsey. (Much the same way ships commanded by Grand Admiral Yamamato will fly his pennant)
-American CL – I presume that this flag will be earned by players in the American CL Campaign.