Update 12.9 delivers the following:
- Early Access to Japanese Battleships
- Battle Pass
- Armory
- Voyage to the North Pole
- Salvage for Victory
- Heroes of Might and Magic III
- Halloween Celebration
- Brawls
- YouTube Membership
- Content Additions and Changes
- Other Changes and Improvements
You can find more information about those features in in-game news and alo in the article:
EU
NA
ASIA