Research In Motion is introducing today the two smartphones that will run the new BlackBerry 10 operating system. Despite optimism among investors who have bid up RIM's shares in recent weeks, analysts expressed mixed opinions over whether RIM can win enough support from carriers, developers and ultimately consumers to regain its lost market share. "Don't forget that in many parts of the world ... BlackBerry actually is the choice of consumers," said Jack Gold, principal of consultancy J. Gold Associates. But Ovum analyst Jan Dawson wrote that "We don't expect it to win significant numbers of converts from other platforms."