Earlier this month we brought you news that both AT&T and Verizon had made Samsung’s new Galaxy S III available for pre-order through their websites, following closely on the heels of Sprint and T-Mobile. Three of the four carriers – all but Verizon – were projecting shipping dates of this week. AT&T promised they would begin shipping the phones on Monday, June 18th, while Sprint and T-Mobile listed tomorrow, the 21st, as their shipping date. Surprisingly, Verizon’s shipping date was July 9th, a full three weeks after the other carriers.

Now, though, it seems that Verizon might have been a little more prescient than their competitors. Shipping dates for the Galaxy S III are slipping left, right, and center. AT&T’s shipping date has slipped into next week – the 28th, to be precise. Sprint is having similar troubles and is also tentatively promising to have filled its orders by the end of next week. T-Mobile, meanwhile, has announced that they’re splitting up the launch. If you’re fortunate enough to live in one of their top 29 markets, you should still be getting yours tomorrow. If, on the other hand, you live anywhere else at all, your Galaxy S III will be coming… wait for it… next week. June 27th, to be precise. So while T-Mobile’s Galaxy S III may be more expensive than other carriers, at least they manage to beat the other carriers to release by a day, right?

Verizon, meanwhile, hasn’t made a peep. They’re presumably still on track for an early July launch. From the way things are looking with the other three carriers, maybe they won’t be as behind as we thought.