New ACD might not be Air "compatible"
Look at the new LED Cinema Display, the cord breaks into three cords near the end (power, mini-DP, and USB). By the looks of it, the split leaves only a couple inches of cord after the split, clearly designed for the MB and MBP, which both have all of those ports on the same side. The MBA has the power on the opposite side and it appears that it might not reach both sides unless they sell some sort of adapter.
On close inspection, it looks like it should reach, but I would check it out in the store before buying...