AT&T promised back in January that it would launch ASUS' PadFone X hybrid, but the device has been stuck in limbo ever since -- the carrier hasn't given out much more than specs for the phone-and-tablet combo. Today, though, there's finally a date to mark on your calendar. The PadFone X should be available on June 6th for $199 on a two-year contract, or $23 per month if you buy it on an 18-month Next payment plan.