I've seen lots of mixed signals from the Russo Bros as to whether or not they plan on returning to the MCU. Honestly, it seems to depend on the day and the interview, as they have indicated strongly both directions multiple different times. Regardless, they truly do seem to have enough on their current plate where if a return is imminent, it at least won't be for a while. I personally would love to eventually see them back, but not for a while. My first choice would be to hear they will be directing a Star Wars movie.