Well, this is just great timing. What we're looking at here is supposedly a Sony Ericsson smartphone, which seems to sport a five-inch screen and a hinged slide-out keyboard like the HTC Shift and the Eking S515. Even if this prototype turns out to be legit, our tipster -- who has a solid track record -- says it's only running on Android 2.1 and that development is in its infancy while low-level drivers are being tested. Well, we can probably wait, except we're also told that internally SE doesn't appear to have any plans for 2.2 yet. Cue the angry tomatoes and eggs, but bring us a PSP phone any day and we'll call off the rally.
Update: We've received word from a second highly-trusted source who says that the display is 5.5 inches (too big to fit in the front pocket), and runs a clean Android 2.1 install. Oh, and it's launching in the fall.
Update 2: We've been told that the device has now been pushed to CES 2011.