any updates on when they plan to end this series ?
From what I last read, they have things firmly planned out through 10 seasons and solid ideas of what season 11 and 12 would look like.
Even though it lost quite a few viewers this season, it still has an absurd amount of viewership that there is no way AMC will cancel it for business reasons.
Walking Dead will basically go until viewers just completely stop watching or someone like Andrew Lincoln decides to do something else in his life.
So at this point I'd say 12 seasons.