Looks like the WSJ was on to something after all; Sprint's website confirms the existence of the dual-screen, Android-packing Kyocera Echo. It'll apparently pivot open to 4.7 inches of display real estate, which doesn't sound so big, does it? No more details at the moment, but hopefully David Blaine will be pulling Echo's price, availability, and specs out of a hat a few hours from now. [Sprint via Engadget]