Is the wiki wrong? It says that:
The map with the 2nd highest vote from the previous week always gets chosen
The highest voted map created within the last 2 to 9 days always gets chosen
A random map is always chosen
2 nominated maps are always chosen
None of those maps were released in the last 2 to 9 days, yet there were 2 new maps this week.
https://www.warzone.com/wiki/Map_of_the_week
Edited 11/28/2019 18:36:15