New BlackBerry Messenger will offer free voice calls over Wi-Fi, open beta starts today

RIM may be focusing most of its energy on the upcoming launch of the BlackBerry 10 OS, but it's also getting ready to roll out a major new feature to BlackBerry Messenger users. BBM 7.0 will move away from just text with the addition of BBM Voice — free Wi-Fi calling between all BlackBerry Messenger users. If you're interested in trying it out, the open beta starts today. Much as BBM initially led the move towards platform-specific messaging as a way to save on text message costs, RIM's n...