when to start pre-order on steam, will surely be available
Doubt it, Treyarch have had ample time to actually bother to sort the camo out for pc users and they clearly have not bothered to do it.
Just shows how little respect they have for us as gamers, and then they wonder why they have no respect from pc gamers.
They have had time to add rentable servers and a server browser to Black Op's 2 and people want that to happen, but they are not doing it unlike Infinity Ward who eventually allowed you rent a server from hosting companies for MW3 but they were still unranked, but you could rent one and have a decent ping rather than using the P2P system.
Treyarch have basically no interest in the PC gamers, and the only reason they bother to release the game and dlc for us to buy is because it's easy money for them, as they don't have to do much to the game to make it work on the pc considering they keep removing stuff from, the game compared to the previous versions.