Historically it is very strange for a carrier to hype a phone and then drop it however it has been known to be done in the past. Although this may not exactly be what is happening to the AT&T branded version of the Flipout but there was no flipping out happening at any of the AT&T stores anywhere this last weekend.
Apparently the stores were told to destroy the promotional literature they had received before which doesn't bode well for anyone hoping for it to come out immanently. New literature might be sent later if launch dates have changed but it's not looking promising. We will keep you up to date as we receive the info.