A render of a mysterious BlackBerry device was "accidentally" leaked on the RIM's developer website. The device apparently is called Dev Alpha B - a successor to the current Dev Alpha device, used to test out the still unofficial BlackBerry 10 OS. The render was quickly pulled down from the site. A vigilant twitter user by the name of @NerdBoss514 went ahead and asked the guys over at @BlackBerryDev on twitter for some info on the mystery device.
GSM Arena , New BlackBerry 10 dev phone pops up, RIM confirms
See also:
wgitn, New BlackBerry 10 dev phone pops up, RIM confirms