Well, Rick has also said that Asus told him not to put the bluetooth adapters into existing Z70V laptops, in order to help phase them out. Hopefully, for all current Z70V laptops, they'll offer it as an upgrade--or at least allow resellers to put the BT adapter into older laptops. The Z70Va definitely has bluetooth. Anyways, there were _rumors_ of a Z71V "Refresh," but the last thing I heard was they were just rumors started on forums. I think Asus has said they're phasing the Z71V line out in favor of the more powerful--and more attractive--Z70Va.
If they're planning on being released August 12th, wouldn't they have _had_ to arrive in the United States and made it through customs? Customs and then shipping will take a week or two... so coming in mid-august will go in line with the early September rollout.