After the massive announcement of an expansion to Halo 3, Bungie has decided to clear the air with regards to the questions surrounding Halo 3: Recon in their weekly update. You can see the full TGS announcement trailer and more info here.
http://www.dailyjoystick.com/index....-qaa-for-halo-3-recon&catid=41:news&Itemid=59