Bluetracker
Tracks Blizzard employees across various accounts.
MTGA Deck filters are still showing the rotated cards as part of standard.
This si frustrating because the decks tehmselves are not considered standard if any of the older cards are in them, making deck building a little more frustrating. yes you can filter by the sets you want, but some people will not know which sets are currently in standard. This needs to be fixed.
Wizards Jay
Rotation doesn't happen until later this year; nothing has changed about what's in Standard with M21's release. (We did rotate where ICRs are appearing, but that's something we like to do a bit early, so players aren't getting rewards of cards that are about to rotate.)
https://whatsinstandard.com/