Wargaming has announced that it has opened a new office in Guildford, United Kingdom for the express purpose of creating an "unannounced free-to-play, multiplatform MMO" using the Unreal Engine. The studio will be headed up by Sean Decker who joined Wargaming earlier in 2018 after a over a decade of experience with both EA and CCP Games. Decker will oversee a 25-developer team that will grow as the game's development deepens.
There is no word on what the game might be, though we do know it is a completely new IP.
We'll keep you posted as we learn more.