Well, this isn’t a release yet. It’s MagicCon Chicago, so they have the panels showcasing stuff from upcoming sets.
This weekend they’ve shown off:
Outlaws of Thunder Junction (Standard-legal set coming out in April)
Modern Horizons III (Modern-legal set coming out in May. New cards, reprints, and cards that were never in Modern being added to the format)
Assassin’s Creed (Modern-legal set coming out in July. It’s a smaller set than usual, but will have starter decks, “Beyond” boosters, and collector boosters)
Bloomburrow (Standard legal-set coming out in late July-early August. It is also the set that will kick off the Standard rotation, kicking MID, VOW, NEO, and SNC out of Standard)
Yeah, it’s all a bit overwhelming sometimes, but the general feeling seems to be “ignore the products that aren’t for you.” I don’t play Modern, Vintage, or Legacy, so MH3 and ACR only mean Commander cards for me. I do play Standard and Pioneer, so OTJ and BLB are relevant, and they’re just the same Standard sets that we’ve been getting for years now.