No, he will be a consultant. Speculation about replacing Alex; RUMOR!
https://nhttps://nypost.com/2020/09/03/is-ken-jennings-being-groomed-to-replace-jeopardy-host-alex-trebek/ypost.com/2020/09/03/is-ken-jennings-being-groomed-to-replace-jeopardy-host-alex-trebek/