It looks like adding Bluetooth 4.0 was just the trick for taking the Pebble smartwatch over the edge -- and by over the edge, we mean to an insane level of Kickstarter success. The watch not only crossed the $10 million fundraising mark -- it aimed for a paltry $100k -- but its initial 85,000 units are now sold out. The campaign still has eight days to go, and though additional backers won't get in on that first wave of Pebbles, there's a second batch on the way.