Improving each year. John Beck was not very good his first couple years only two making incremental improvements until he made the big jump his senior year and got himself drafted.
Jake learned a lot this year, but in my opinion has not hit his ceiling. Not even close. He obviously needs to work on pre-snap reeds, blitz pickups, and hot reads, but there's no reason to believe that he can't improve on these things as they come with experience.