In time for Empire Magazine's September issue, E! has posted images from the issue that depicts the younger look of Gollum with more detail to his face and body thanks to advancements in CGI and motion capture. Its a subtle change as Gollum was already a long lived creature but once he lost the ring he did start to age a bit faster (and nevermind the stress of being tortured by Sauron's minions).

First Look at Younger Gollum. There are any First Look at Younger Gollum in here.