I follow that guy, it's a journalist which directs a magazine releasing each 6 months (
Manual, the magazine is amazing, not focused on reviews and such, but more on thoughts around the industry and video games as an art, including interviews with key people in the industry and such). He doesn't leak usually, but could comment on rumours and such, but he definitely has connections, and I don't think he would comment on any of that if his own source wasn't reliable.
After the
focused on third parties comment, he also adds that Persona will be there (not sure how many, or if Persona 5 is included), and that a famous game from 4 years ago that came out in PS4, Xbox, PC, etc. will be announced for Switch in that Direct. He is excited about that game and will definitely play it on the Switch (not sure if he added more hints during the stream).