You've already witnessed a prototype
of the BlackBerry Touch and its sleek lines, but get ready for a new peek as RIM has put on its "serious business" face in anticipation of Monaco's release
. As you can see, the designers from Waterloo are separating and raising those four iconic buttons. Regardless of RIM's intentions, if this leaked unit makes it to retail shelves, the change would represent a subtle but distinct shift in BlackBerry design. We're guessing the corporate-type won't even notice -- unless those new protrusions happen to catch on their oh-so-fashionable holsters, anyway.