With the iPhone 5 on its way, AT&T moves throttle unlimited data

Apple's upcoming phone may have just throttled data transfer speeds for AT&T's top data users.

As anyone who is anyone knows, the iPhone 5 is almost certainly on its way. Want to know how AT&T is preparing for it? By throttling its customers data speeds.

Confirming previous rumors, AT&T says that it plans to throttle data speeds for its users starting October 1st. The move, AT&T says, will only affect the very top level of data hogs:

Starting October 1, smartphone customers with unlimited data plans may experience reduced speeds once their usage in a billing cycle reaches the level that puts them among the top 5 percent of heaviest data users.  These customers can still use unlimited data and their speeds will be restored with the start of the next billing cycle.  Before you are affected, we will provide multiple notices, including a grace period.

Sort of rains on the whole "unlimited data" plan thing, doesn't it? With the move AT&T offers unlimited users an ultimatum: You can either have unlimited data at reduced speeds or reduced data at unimpeded speeds. Neither, to be honest, sounds all that great.