There are currently 78 million BlackBerry subscribers world-wide, and RIM says that a large majority of Fortune 500 companies issue BlackBerrys to employees.

WSJ: Double Mobile-Phone Users Like iPhone for Image, BlackBerry for Email

Earlier this year, Chief Executive Thorsten Heins said RIM would spend "in the hundreds of millions" of dollars on world-wide marketing for the company's new phones.

WSJ: RIM to Launch New BlackBerry in U.S. Friday, Aims to Challenge Apple and Samsung