Yes. Beyond the Championship (Worlds 2022) Azir skin and the return of previous Worlds skins from the legacy vault, we can expect Riot Games to hold an in-game event with a battle pass, as they have done in previous years—including Pick’em rewards.
At the time of writing, Riot Games has yet to reveal more about its plans, but it may feature the Spirit Blossom skin line according to PBE information. In 2021, the Dawnbringer/Duskbringer skin lines were part of the festivities.