I know it holds no weight whatsoever (AT&T has made some pretty stupid marketing moves in the past), but I think the Samsung announcement on May 3rd is a pretty good indicator that we'll get the One XL on the 22nd. They need a cushion of the latest and greatest before the tech sites have something new and flashy to write about and bump up the Google search algorithm and news pages. In fact, I think they've hesitated too long already (the announcement is out and people's heads are already turned). It's just my two cents, but I really think this announcement will force AT&T's hand to try to keep their stock of One XL's they have coming/came(?) relevant and sold...
PS I am not saying that Samsung or the GSIII is will/be a better device (I think it will be on paper, but in my experience with 3 samsung galaxy devices real world use is lacking quite a bit- especially Touchwiz- so they will be roughly equals throughout this year), just that consumers naturally have short attention spans, and why would the less-informed of them buy something "old" that was announced and all the news is from back during the winter when this flashy new device is just around the corner. AT&T has historically taken the stance that it doesn't matter, either now or later they will get the sale- but if they had marketed the One XL heavy with hype these past two weeks and the upcoming one, they could have sales now AND potentially in the fall as well (from us device whores out there)...
Just thoughts, but I now definitely think we'll be seeing this device next week...
Again thanks to EGBTMagus and iamthedudeman for their insider info and intuitions, all things combined this looks more likely each day...