Doctor Doom is now Sorcerer Supreme, and the Avengers and Fantastic Four are going to do something about it in One World Under Doom #1 first look
"One World Under Doom! Six months ago, Doctor Victor Von Doom became Sorcerer Supreme - then disappeared behind Latveria's closed borders. For most, there’s enough going on in the world that Doom's absence is not a priority, and some time without him feels like a blessing," reads Marvel's official description of One World Under Doom #1.