This week may belong to Amazon and whatever information the mega-retailer decides to drop on our heads tomorrow at its press conference in Santa Monica, but Barnes & Noble's apparently won't be letting the Kindle maker hog the spotlight for too long. We've been tipped off from a reliable source that there is, in fact, a successor to the Nook Tablet heading our way this fall. The device is said to be "super light," while packing an "incredible display,