Yesterday the Samsung Vibrant, T-Mobile's Galaxy S phone, officially became the first in the Galaxy S lineup to be available in the US - beating AT&T to the punch by three days. Last week we found out, thanks to AT&T's Facebook page, that the Captivate would become available this coming Sunday, July 18. But it looks like some AT&T stores are getting antsy. According to AndroidGuys, one of their readers has successfully purchased a Captivate simply by walking into a store and asking for one. The report also says that AndroidGuys were able to confirm availability of the device by calling their own local AT&T retail store. Naturally, I called a few locations myself only to find that the device wouldn't be available until Sunday. So, it looks like it's either on a store-to-store basis, or you have to actually show up at the door and sweet talk your way into a Samsung Captivate before this Sunday. If you find out otherwise, please let us know in the comments!