According to this news here:
...paleontologists at Montana's Hell Creek have found the missing third finger of one of Tyrannosaurus rex's undersized "hands." The finger suggests that T. rex had a powerful wrist and its hands were probably able to hold onto chunks of flesh while the monster's gnarly jaws did all the killing.
This is pretty exciting news, if true! Knowing that T-Rex only had two fingers has long separated the TRUE DINOSAUR ENTHUSIASTS from the mere posers. Also: knowing that they didn't have any ears.
Will I update my art? The answer is no