Update 0.8.3 was released this morning on the Russian server but it turns out that multiple issues appeared (Invisible ships among everything else).
To patch things up before bringing the update on the other servers, Wargaming decided to delay the initial release dates by a day. Let’s say thank you to the Russian server players for being the beta testers!
The new release schedule is as follows:
For the European server, the server will be unavailable on Friday 26 April from 07:00 CEST (UTC+2) to 10:00 CEST (UTC+2).
For the North American server, the server will be unavailable on Thursday 25 April from 03:00 AM PT to 06:00 AM PT.
For the South-East Asian server, the server will be unavailable on 2019/04/26 from 05:00 (UTC+8) to 08:00 (UTC+8). At least, I guess because while they say when it starts, they don’t say when it ends.
Due to the update being postponed, there will be no Clan Battles both on Wednesday (AKA today) and on Thursday. The next session of Clan Battles will only be on Saturday (the downside of having the cross-server matchmaking).