Could all be rubbish, but the speculation is that the Season Pass 5 development for Street Fighter V is because Street Fighter VI was supposed to come out in 2021 but has been rejected internally at Capcom. Developed with team mechanics as part of it, the game was received so poorly that Ono was demoted and a new team took over the project knocking it back a year.
The game is supposed to be coming along much better now so presumably is tracking for a 2022 reveal and release.
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