The recent Duel Decks announced will take us back to the plane of Zendikar, in a war against the Eldrazi. Duel Decks: Zendikar vs Eldrazi is due to be released on August 28, 2015 and is available in English and Japanese languages. I am expecting at least one Eldrazi titan in the Eldrazi side and maybe a Stoneforge Mystic on the Zendikar side. I am just wishful thinking haha.

The announcement page on the mothership site can be found here.