This case doesn't look like a 800D replacement it looks like one of those boutique cases from Mountain Mods hence why it looks like they focused on watercooling. I would be surprised if this thing came under $400. As for air cooling its probably using the same system as the 800D, pulling air in from the bottom and pushing it out from the top.
Also some information for the air-coolers:
"For those concerned with aircooling, the case has comes with three 120mm fans mounted in front. That aluminum fascia is "floating", like a speaker grill over a high-end speaker. The surround area around that is about an inch on each side, and almost two inches from the front fans, which gives them plenty of room to intake cool air, and the front aluminum fascia comes off easily to change the front dust filter or access the three 120mm fans in front.
Pre-drilled for radiator, of course."
-CorsairGeorge, Global Product Manager
EDIT:
Price:
"Price? Over 3 under 4."
-CorsairGeorge, Global Product Manager
Looks like a winner.