I already know a lot of questions but there's new information on it.
(And does German Synchro exist on wakanim?)
No earlier than 2021/2022
Dub currently only at Animax.
The deutsche synchro is currently only available on animax
And season 3 could come on netflix next year at the earliest
(There's not even a 4, the 3 season consists of 3 parts)