Thanks to DemoN_M4U for translating
3-10 December – discount on normal and premium tiers II-V, missions for consumables and crew xp personal reserves
10-16 December – x3 for first win, discount on camo, inscriptions, emblems, tier VI and VII tanks(excludes swedish), mission 25k xp (must be top 10 in battle) for consumables and crew xp personal reserves
24.12-01.01 – discount on 180 and 360 days of prem account, VIII – X normal tanks (excluding swedish) and VIII prem tanks, 1 Free XP – 10 Crew XP
1-20 January – you can win prizes on polish channel, personal reserve, premium account, Rudy premium tank. You need to subscribe to the channel, click the link in desciption, and write in game nick and yt name. Prizes will be handed out 22.12.