Palm going Centro for next webOS handset?

The Boy Genius Report just got ahold of this ultra-blurry shot of what purports to be Palm's next webOS device, with a supposed fall release date and zero other info to go on. From the looks of things the keyboard is stationary, but with the relative height-to-width ratio (and last night's "Mini-Pre" rumor) we're thinking the keyboard and screen might be shrunk down slightly -- which, were we to conjecture further, could mean a webOS Centro. Or perhaps Palm's gone large and produced something entirely more delicious.