You may have heard chatter recently that Dell's Streak is destined for AT&T as soon as July 19 -- and now, with a little dot-connecting, we're pretty much on board with that theory. We've just been tipped that on a corporate-owned AT&T store where contractors are in the process of installing new kiosks in the "Smartphones" area of the floor under tight security; they've apparently been made to sign NDAs and a number of employees "are already on the chopping block" for trying to figure out what it is. We suppose it could be something Captivate -related, but considering the level of security here, we think it's something much bigger. Like 5 inches or so, if you catch our drift.