Halloween 2020 event Mirny-13 is soon arriving at the game. All the info we have received so far about the event, a couple more things will be posted today, instead of separate links, all of them here makes more sense for anyone who wants to know a bit more about the event.
Source: https://www.reddit.com/r/WorldofTanks/comments/jeuaot/halloween_2020_mirny13_details/