We all know AT&T just loves its tiered pricing models, so it's no surprise to hear that the carrier intends to turn its forthcoming LTE service into a tier-vana of great new sophistication. BGR has come across an internal document detailing how AT&T plans to segment its 4G pricing on the basis of both speed and data allowance, meaning that your price will reflect both the amount of data you consume and the rate at which you gobble it down. To add further complexity flexibility, Top Ups will be available that'll allow users to amp up their connection speed for a limited time or increase their allowance on a per-month basis. We're hearing trials of this new offering will commence in May, which fits in neatly with the currently planned LTE rollout in the second half of this year. So it's not all set in stone yet, but irrespective of the number of data options AT&T throws our way, the paramount question will always be the same: how much?