There's more proof that the Samsung Ultra Music will soon be landing at your area Sprint store. We first predicted the development last month at CES 2007, and now Engadget has blurry photos of an Ultra Music wearing a Sprint logo. This latest development comes just over a month after Phonescoop found the Ultra Music's FCC approval documentation, which indicated that the official Sprint model number will be SPH-M620. There's not much more to say right now but all signs are pointing toward an April 1 launch date. And just so you know, that's just after the end of the annual CTIA cell phone extravaganza.