Today’s patch added 2 new flags, neither of which were listed in the patch notes.
I personally do not recognize the second flag, or do I know for certain what they are for, so if anyone knows comment it and I will update this post.
Flag 1: Ulster Banner
My best guess is that the Ulster Banner flag is probably going to be tied into the “I Have Money!” package for an upcoming premium vessel. More then likely for the HMS Belfast as “Belfast”, the city, is the capital of Northern Ireland, which is the place where Ulster Banner originates as a national flag. (being part of the larger Ulster region)
As this is clearly not a flag in reality, I can only presume that this flag will be part of some sort of event.