K here's what I heard today from a very reliable corporate source:
It's a device. Dual, hinged, 4"+ screens. Apparently there's a second screen that flips up from the back, possibly just giving you one large screen, or possibly allowing you to run an app on each screen. No indication if it is actually a phone or just a tablet/slate..
Now I know, we haven't seen any leaks for something like that so it's hard to believe. I myself would never have believed it if it hadn't come from this source. But I have no reason not to believe them. Don't believe it if you don't want, but I'm just passing on what I heard, trying to do my part.. I'm actually really excited- don't know how the whole form factor is gonna work, but I can't wait to see