According to Shepshal Nick, host of the podcast XBox Era, Darth Maul will appear in the upcoming game Star Wars Jedi: Survivor. Apparently his scoops are hit and miss, so take this with a grain of salt.
Jedi: Survivor is the sequel to Jedi: Fallen Order. It will take place place ten years after Revenge of the Sith. If Maul appears, it will certainly be as the secret leader of Crimson Dawn.