Earlier today, we heard that AT&T was telling some customers that've pre-ordered the Galaxy S III that their order will be delivered on or before June 28. It appears that not everyone will be waiting that long, though, as one of our readers has received a notification that his Galaxy S III has shipped. Included in the email is a tracking number and an expected delivery of June 21 by 3:00 p.m.

So far AT&T has remained fairly quiet when it comes to an actual launch date for its Galaxy S III variant, only saying on June 6 that the device would be released "in the coming weeks." The carrier is also planning to release a red version of the Galaxy S III, but that model (which hasn't even been shown yet) isn't expected until later this summer. However, for some pre-order customers that'd rather have AT&T's Pebble Blue or Marble White versions, the wait for the Galaxy S III looks like it'll be over pretty soon. Have any of you other AT&T Galaxy S III pre-sale folk gotten a shipping notification?

Thanks, Jorge!