In June Battlefield 3 pre-order bonuses started surfacing, one such bonus includes "eight unique mulitplayer skins for the elite player." Otherwise known as the SPECACT kit. We assume that this is what the appearance option includes. There haven't been any screen shots or information on what the camouflage options in BF3 offer, but they will probably work to help the blend the player in urban, desert, and forest battlefields. You can see the option in the Battlefield 3 screenshot below.