According to a member of the MacRumors Forums, Research In Motion's (RIM) co-CEO Jim Balsillie, speaking at a social media conference in Toronto, told all in attendance that BlackBerry's killer app, BlackBerry Messenger (BBM), will be coming to the iPhone on April 26

This rumor has been floating around for some time now. BGR reported earlier this month that RIM would be porting the BBM service to not only iOS, but to the Android OS as well. If it were to be released to other platforms, BGR reported that RIM would charge either a recurring or one-time fee for the service. 

We're taking all of this with a heavy, Jerod Mixon-sized grain of salt. BlackBerry's messaging capabilities, namely BBM, are what keep most users locked in to the platform. The main lament from people who leave BlackBerry for another platform is, "Damn, I wish I still had BBM". Why would RIM give one its best features to the competition? But who knows? Crazier things have happened

[via MacRumors

Update: RIM reached out to let us know that it did not hold a conference in Toronto this week and that Jim Balsillie did not speak at any event in Toronto this week.