The Walking Dead ended with season 11. At the moment, there are no plans for the series to make a return for season 12 or more, as the focus of TWD universe is on the spinoff projects that are currently airing and other possible ideas of how to push the franchise in exciting new ways. However, multiple people involved with the shows have talked about the possibility of doing a crossover event between the spinoffs, reuniting characters like Rick and Daryl at least one more time. While it should not be called season 12, that reunion has to happen at some point.