It wouldn't surprise me because we already have business accounts that we can only deliver withing a 2-3 hour window. However, drivers get around it by delivering the packages before the window, pre-recording and then hitting stop complete during the window. In the case of residential stops it would have to be for signature required packages only because the same thing would happen. Some drivers would fake signatures, knowing that most customers don't care and just want their package, others would catch someone at the house outside the window, get a signature, pre-record it and stop complete it during the window. UPS would lose money offering that service to residential customers. It would increase miles, fuel consumption and overtime, especially for rural areas. Oh wait...I'm using common sense. Nevermind, they will probably have it soon. Gotta keep that stock price up.