There are three new frame styles of card: borderless Planeswalkers, extended art cards, and showcase cards.
Borderless Planeswalker. Technically, these are not new. They were introduced in the Mythic Editions of the last three sets. However, this is the first time players will find them, along with bordered versions of the same Planeswalkers in the standard booster pack, now called a Draft Pack. They also will appear in the much pricier Collector Booster.
Extended Art Frames. On these cards, the card art extends to the left and right edges with the normal border remaining at the top and bottom of the card. The text and art on the card remain the same as the regular card but the extended art cards will only appear in the Collector Booster, with the standard version of the card appearing in the Draft and Theme boosters.
Now, for the new packs. The Draft and Theme Boosters stay the same, save for the addition of the new frames to the Draft Boosters. The Collector Booster is where it gets interesting. These will retail for $20 to $25. They will contain 9 foil uncommon and common cards, 1 foil rare/mythic rare (any from the set, including borderless), 1 rare/mythic rare with extended art, 3 special frame cards (either borderless or showcase), 1 foil token, and 1 ancillary card, basically a card connected to the set not included in the Draft Booster. For Throne of Eldraine, this could be one of the cards included in the Planewalker decks, the Buy-a-Box card or one of the cards from the new Brawl decks, a new play format debuting with Throne of Eldraine (but not the alternate art card found in the Bundle).
The other quasi-new pack is a change to the Promo Pack, which released as OP support with Core Set 2020. Three of the cards included in the promo pack remain the same. However, the promo-stamped land card goes away, replaced by MTG Arena promo card, which good for a booster pack on MTG Arena.
Oh, one more thing. There is a change to the Buy-a-Box promotion. For Throne of Eldraine, purchasers of a booster box will not only receive a quantity of the Buy-a-Box cards but an equal number of Collector Booster packs to give out to each booster box buyer. That should really stoke booster box sales!
The opinions expressed in this column are solely those of the writer, and do not necessarily reflect the views of the editorial staff of ICv2.com.