3G MicroCell, where it's currently undergoing a public market trial in Charlotte, North Carolina -- and basically, it's a decent deal as long as you don't want unlimited calling. Stores are charging $150 for the unit itself and service is free (similar to Verizon's model, though Verizon charges $100 more upfront and the unit doesn't do 3G); if you want to tack on unlimited calling, you're paying another $20 a month unless you have some combination of AT&T landline or DSL service at your address. $20 is properly insane, though in exchange, the carrier throws you a bone with a $100 rebate on the device. All they've got to do is drop that unlimited service down to $10 a month to bring 'em in line with Sprint and T-Mobile and put some pressure on Verizon, which still doesn't offer any unlimited add-on.
[Via Mac Rumors]