We're sure RIM would still prefer that you own both a BlackBerry smartphone and a PlayBook, but it looks like it's now going some way to address the potential misconception that you actually need a BlackBerry for the tablet to be of any use. Speaking with Forbes, RIM senior product manager Ryan Bidan insisted that "on its own, this is a great standalone tablet," and that "this is not a device that is reliant on a BlackBerry." As Forbes notes, however, it is true that the PlayBook needs to be tied to a BlackBerry for most PIM functions like contacts and calendar management, but Bidan says those features will come to the PlayBook separately "as the platform evolves" -- he didn't get much more specific than that, unfortunately.