I think so too. I am actually tracking this now. For one player, Greer, who was a redshirt, he increased in Speed by 23, Reb by 42, PE by 41, BH by 25.
Here are 3 other players that are in their senior year now, with still about 20 games to go in their senior year. This is how much they have improved for the categories that they were rated high on Future Stars
Norman has increased in PE by 29 and BH by 28
Taveras has increased in Spd by 18, Def by 31, LP by 45, P by 18, ST by 13
Phillips has increased in Athj by 22, Spd by 23, Reb by 27, and LP by 53.