What are we up to now militarily?

Over the past couple of months, I have noticed that ALL military vehicles I have seen on the roads have the Olive Drab camo again. I remember the that prior to Iraq, everything went to the desert camo. So, does this have more to do with the culmination of the Iraq war or is it a hint at what our next campaign in the endless war of terror is going. If so, do you think it is Iran, Africa or South America?