We've known that TerreStar Networks and AT&T Mobility were in bed together for quite some time, but evidently the honeymoon phase is finally reaching its logical end. Reportedly, the carrier is gearing up to go live with an extension of service that'll involve satellites and a pinch of luck, giving select customers the ability to roam between its GSM network and TerreStar's satellite network. If all goes to plan (we're not holding our breath, for the record), AT&T will begin to resell satellite service and phones soon after the bird is launched some 22,000 miles above North America on July 1st. Once perched, it'll provide coverage across Canada and the US, including the US Virgin Islands and Puerto Rico. There's no definitive word on pricing, but we're hearing that sat phone service will run around $1 per minute while hybrid handsets will go for around $700 (unsubsidized). Pricey, sure, but how else do you plan to phone home on your next visit to the Pitcairn Islands?