Wizards of the Coast has announced that this November they'll be releasing Garruk's Revenge, a brand new expansion for Magic 2015 - Duels of the Planeswalkers. The expansion will add four new campaign levels and a Garruk Wildspeaker deck from the Alara block.
Crushing your foes will earn you more cards from the Alara series, and in exciting news all of the original Magic 2015 campaign cards (as well as Hunt Bigger Game and the Expansion cards) will be earnable through gameplay. Also, if you've already played the heck out of the game and unlocked the previous five chapters (Innistrad, Theros, Ravnica, Zendikar, and Shandalar), you'll be able to win Battle Boosters in multiplayer matches.
Garruk's Revenge for Magic 2015 will be available for $4.99 on the App Store in early November.