The MMO is surprise and yet untitled.
An unannounced Marvel IP-based MMORPG is running at Dimensional Ink, the studio behind DC Universe Online and a subsidiary of Daybreak Game Studio. The game's development will be led by Jack Emmert, who designed City of Heroes and currently oversees development at DCUO. The project is long-term, so don't expect to hear more until 2023 at the earliest.
The news of the game's existence came with an investor presentation from Enad Global 7, owner of Daybreak. The presentation lists it as an "Unannounced MMORPG" and says it's a "Marvel IP-based multiplayer online game." Dimensional Ink is based in Austin, Texas and currently runs DC Universe Online.
Daybreak has been very successful as a publisher of MMOs, especially those that have sustained an engaged audience despite never reaching the top of the stack. They are the publisher of the revamped Lord of the Rings Online alongside Amazon's TV series. DC Universe Online is also scheduled to receive an upgrade with "a graphics upgrade and the largest expansion content to date" planned for 2023.
Dimensional Ink's on website There is room for an unannounced project, but little else outside of it.