The upcoming firmware update for the Nook Color is shaping up to be a hefty one for the e-reader cum Android tablet. Barnes & Noble has now announced that it's officially opening up the device to developers, and will be taking app submissions through its developer site effective immediately. The Nook has long been one of the best bangs for your buck in the ever-expanding world of Android tablets, and all that's left now is Honeycomb -- and no, the
