From what I have read, if you get a DL with the lightning connector, at this point in time, you need to get a separate iPad Air Tray. Looks like the Air tray is approx. $50.00 US. Here in Toronto, the price is the same, but by the time you buy a DL1608 and then the Air Tray, you are getting close to X32 rack territory. I may be way out in left field, so please, anyone chime in on this if they would like?
For current 30 pin dock owners it's not too much of a big investment to go to lightning, but still an expense just the same.