So when exactly will Master of None season three premiere? Right now, we don't actually know, just that it will arrive sometime in May. Since there's no trailer or any other promotional materials out yet, it seems like a pretty safe bet that it's going to be part of the mid- to late May slate, rather than in the first week or so. That would, at least, line up with how season two aired, way back four years ago: the full season dropped on May 12, 2017.
The UK-based website Chortle first broke the news that Master of None was returning when it reported, back in January, that the show had started filming again.