3G MicroCell first launched -- until now. Starting in the middle of next month in a deployment that spans "several" months, customers across the country should expect to see MicroCells pop up in their local regions. The device itself will run a one-time fee of $149.99 before a $100 mail-in rebate (when purchased with a "3G MicroCell calling plan," though we don't yet know what that constitutes). Separately, there'll be a $19.99 plan bolt-on that offers unlimited calling when connected to the device -- and anyone tacking on a new U-verse or DSL line of 1.5Mbps or higher will get another $50 rebate. It's not the end of AT&T's spectrum or backhaul concerns, we're sure, but it's a start.
Update: We've just clarified -- the $19.99 bolt-on is the only one that's relevant for the $100 rebate; there are no other dedicated MicroCell calling plans, so that should make it a little easier to bring down the net cost of the unit since you don't have to change into another base plan.