[2020] The "Renewal Season" banner on the home screen is linking to a year old update about standard rotation.

That should be pointing to the rotation/renewal info from our last State of the Game: https://magic.wizards.com/en/articles/archive/magic-digital/mtg-arena-state-game-june-2020-06-23#rotation

Hopefully we'll get that link updated soon, but that's the info it should be giving. (And no, we're not spoiling the upcoming set names)