I posted yesterday on the new that AT&T was selling SIM-only service, but apparently still required customers to sign a two-year contract. AT&T says now that the language on its online store talking about the two-year contract was a mistake, and that customers don’t generally need to sign a contract for SIM-only service. GigaOM says AT&T told them these were the real stipulations:

* A customer can bring their own compatible device to us, and we will sell them a SIM for $25 or sometimes less.
* The customer can purchase prepaid service, which requires no term commitment and no ETF.
* In most cases, the customer can also purchase postpaid service with no term commitment and no ETF.
* The exception is that we may require a commitment with a promotional rate plan.
* In any case, the bottom line is that we give customers the option to bring their own device to us and purchase service on a month-to-month basis.

That’s a lot better — though the “promotional rate plan” leaves some wiggle room.