My hat goes off to those of you who are waiting for Haswell. I just didn't want to wait anymore and picked up the 2.7/16/512 15" rMBP yesterday. I'm enjoying it very much for what it's worth. The Apple Store manager told me I'd be able to pick up any Back-To-School promotion that may occur in the next 14-days. I will certainly be bummed if Haswell comes out very soon, but still outside of my return window. Such is the nature of instant gratification in this case!
The wait is killing me, but I don't need it, but want it :') Oh well. Hope you enjoy yours!