What happened? Did T-Mobile, like, forget to launch this? Yeah, it happened in Seattle, but we're imagining there are plenty of people across the whole country that are down with rocking calls over WiFi while in the privacy of their own homes -- and they've had this thing in the wings for a long time now. Anyway, according to a Wall Street Journal piece, it seems that early problems have been finally ironed out and folks nationwide will be able to get their UMA on for $20 a month on top of the cost of their regular plan. T-Mobile can hook folks up with a compatible router for free after rebate or they can bring their own to the party. Look for it to launch as early as the middle of June (if the stars happen to align in just the right order).