If it is contuniuly getting upgrades, then the scenery will be out of dated pretty quickly, right?
Not really.
Currently, it comprises only one runway, a cargo terminal, and a single low-cost terminal that will open early next year (?).
The worked slowed down due to the world economy slow down, so there should not be "much" growth for a while.
I believe that once it is "mature" in say ten years or so, they will probably shut down the existing Dubai airport, and move everything to this behemoth.
P.S. I do not particularly like the design, and favor something more like a double H design.
I am not an expert, but it seems to me that traffic has to do a lot of "hold short of runway" as they taxi to the terminals.
But then again, it has not stopped Atlanta being the worlds busiest.