Lionhead have put up screenshots of Knothole Island on their website. Some show new areas and some show new clothing and other things. It's all very interesting.
Is that a guitar on the players back? It looks like it.
I can't make out if that the players haircut or a Centurian style helmet.
Edit: I read a bit more on the Lionhead site and found a run down of what the Knothole Island DLC includes. It includes:
- Embark on 3 unique quests set in 3 unique dungeons.
- Unravel the mystical secrets of the resurrection shrine.
- Try on a whole new range of outfits and look like an armoured knight, an assassin, a barbarian or a leather-clad biker, among many others.
- Brandish 6 new weapons.
- Dozens of unique potions that will drastically alter your appearance.
- Customise your weapons the way you want with the new augment tool and a whole new array of augments.
- +50 additional leaderboards.
I'm betting the "alter your appearance" potions will be for new faces and skin colours.