RIM will also introduce some new BlackBerry 7 phones, including entry-level models, and initiate programs to try to boost sales. Those efforts are aimed at trying to sustain sales before the launch of the first BlackBerry 10 phone later this year.

The company continues to only vaguely say that it will deliver the phones based on the new platform in the "latter part of this year." It has blamed the delay on a decision to use a more advanced chipset that won't be available until the middle of the year. RIM will offer prototype devices to developers during its annual BlackBerry World event in May to help them build apps that will be available at the launch of the phone. Heins said the company plans to have phones for carriers to review early in the summer, with shipments coming later in the year.

The company has decided to stop offering guidance on future unit shipments, revenue and earnings. It generally warned, however, that it expects continued downward pressure on earnings throughout the year.

RIM also announced additional leadership changes. David Yach, who has been CTO of software for the company for 13 years, is retiring. Jim Rowan, chief operating officer of global operations, who has been with the company for four years, is leaving to pursue other interests. RIM said it is searching for a new COO to run the entire company's operations.

The IDG News Service