Research In Motion this morning finally unveiled its next-generation mobile operating system, dubbed BBX. Co-CEO Mike Lazaridis said the platform combines the best elements of the aging BlackBerry OS with QNX, which powers the PlayBook. BBX likely has the technical muscle to compete with iOS and Android, and as long as RIM executes (which is never certain) it should have strong appeal to RIM’s existing customer base. That base is winnowing by the day, though, as is RIM’s developer community. So RIM must bring BBX to market quickly and flawlessly if it is to continue to be a major player.