I made a post about this, but it was closed because there were other post talking about the direct. If you look carefully besides Kirby, there were no Nintendo First party developed games, only third party.
TWEWY: Square
Hyrule warrior: Team Ninja
Mario Tennis: Camelot
YS VIII: NIS
Payday 2: Overkill/505
FE: EA
Donkey Kong TF: Because it is a port, i dont think Nintendo themselves are doing it
Dark Souls: Namco
Plus there is always a full Nintendo direct around 15 days after a direct mini. So who knows....