It only applies to folks in the 22 states that AT&T serves, and you need to sign a 1 year contract, but check out what The Consumerist found:
As part of a concession made to the FCC in order to get its mitts on BellSouth, AT&T is required to offer basic DSL for $10 a month to its entire 22 state coverage area for a period of 2 years.
If you can’t find the plan listed on the website, don’t worry. AT&T wants it that way. They’ve hidden it, according to the AP.
Cory Doctorow makes a good point, though:
But even at $10/month, AT&T DSL should be avoided like the plague. These are the scumbags who illegally wiretapped the entire Internet for the NSA, who broke net-neutrality to find “copyright infringements, and who inspired NBC to call for a law requiring all ISPs to do the same (imagine — a law forbidding network neutrality!). Seriously: the only day I wouldn’t piss on AT&T is if they were on fire.
But, if you’re the type that can stomache the death star’s policies, $10/mo is a darn good deal. Just inquire about the secret FastAccess DSL Lite plan.