[denizen467]

Probably a good bet they will include international arrivals facilities. They need more of them, even if T5 gets some expansion. Also, alliances really want to co-locate. Finally, this sketch suggests a pretty large main building for T2, large enough for international arrivals -- and for the $$-producing duty free shopping mall that modern airport developers crave.

As for Delta, the only inference here is that there will be an increase in number of gates and there will be more space for them. It's probably meaningless to make further predictions over this sketch at this stage though.