It would definitely break precedent for them to release it now, but it wouldn't break all precedent. This is, thanks to Covid, an Olympic year. If they released something before March, it'd be a match relative to the Olympic scheduling but not a match from the standpoint of how often they update models. I could imagine them doing it, if only because Covid has upended a lot of things and forced many traditions to be altered. (However, the rumor claims it will be later this year, so there's that!)
And it's "only" 36 months too early for 2024 (Q1 2024 - Q1 2021 = 3 years).