This is the barest, the absolute slimmest of rumors. All we have is a logo, courtesy of Engadget, and the assurances of their source that it will be a Windows Phone 7 handset on Sprint. The Arrive was apparently previously called the Ruby, and the name has just been trademarked.
Not exactly proof of the highest calibre, but enough for us to perk our ears up and pay attention. We’ll be following this to see where it goes.