The official trailer for Stranger Things Season 4 shows Max levitating near Billy's grave, indicating she now got mysterious supernatural power.
Eleven's superpowers were lost at the end of Stranger Things season 3, leaving the series without a main human character with enhanced abilities.
Shortly after, Max was seen back at Billy's grave along with Steve, Lucas and Dustin. There, it shows how she started levitating mysteriously.
There are a few theories as to why Max can now fly in the air, with a new power gain still being a possibility.
Stranger Things Season 4's Official trailer dedicates most of the time with Max's character, as she's often seen at Billy's grave, running through Upside Down, & exploring Creel House clock.
Max's investigations of Creel House's grandfather clock, which is thought to be a portal to the Upside Down, may have triggered a response that granted her powers.
While having abilities may suggest Max is the next Eleven, her levitation in the Stranger Things season 4 teaser looks to be more associated to the new installment's paranormal angle.
Max has only been spotted levitating outside of Billy Hargrove's grave, implying that he is possessing Max from beyond the grave.