Tonight there will be a Server update on EU and NA.
For EU:- WoT both EU servers – 4:30 UTC (06:30 CEST)
WoT Eu 1 – 5:00 UTC (07:00 CEST), WoT Eu 2 – 5:30 UTC (07:30 CEST)
Each restart will take approximately 25 minutes.
On NA:- There are plans to release Micropatch 0.9.20_4 on September 27th, 2017
Maintenance will begin at 03:30 Pacific Time (10:30 UTC) and will last approximately one hour and thirty minutes.
During maintenance, World of Tanks servers may become unavailable, however you should still be able to login and play.