I am trying to decide if the "we will update you on 9.20" message isn't a direct offshoot of them basically marking every order as "backordered" last year and freaking everyone out. I did end up getting my phone on launch day (a 6), but I do recall that after the botched online order last year, and calling and getting to a rep at like 5am, they marked orders a few days later as backordered and thats when the sh*t hit the fan and everyone freaked out.
So if the lesson last year was to avoid the dreaded backordered word, maybe they have improved a bit (in terms of order status and communication.)