The new Hamburg Dockyard, new conditions for combat missions, a revamped Armory, and changes to unique upgrades, as well as Ranked Sprint, Clan Brawl, and much more! Read it on the portal
This thread was added on June 09, 2020, with posts from Hapa_Fodder.
https://blog.worldofwarships.com/blog/30
All the information is in there.
-Hapa