The Waterloo, Ontario-based company said the phone, unveiled at the Mobile World Congress (MWC) in Barcelona, would initially hit stores in U.S and European markets around April and be priced around $275.
The company also said it planned to roll out two more models over the course of the next months, both with a keyboard.
BlackBerry's 'Leap' smartphone
One will be a high-end smartphone with what Blackberry called "a dual curve all touch display" with a keyboard behind a slide. That may refer to the sort of curved screen featured in Samsung's latest Galaxy smartphone.
"We don't have a code name for it but I call it The Slide," BlackBerry Chief Executive John Chen told media in Barcelona. "It will come some time this year," he added without giving a specific date.
BlackBerry, once a must-have device for business executives and government officials because of its pioneering secure email service, has haemorrhaged market share to Apple's iPhone and rivals running on Google's Android software.
A hostess shows off the new Blackberry Leap smarphone during the Mobile World Congress in Barcelona
In a bid to remain relevant, the company has pivoted in the last year to focus much more on its software business and core strengths such as data security. However, the company has stressed it remains committed to its devices business.
At MWC last year, BlackBerry unveiled the Z3, priced at under $200 and built as part of a tie-up with FIH Mobile , the Hong Kong-listed unit of Taiwanese electronics company Foxconn Technology Co. The Z3 was aimed at reviving BlackBerry sales in emerging markets such as Indonesia, but failed to make much of an impact.
With the new devices, BlackBerry hopes to fight its way back in the smartphone segment. "We expect to stabilize revenue and return to growth," Chen said, declining to give a time frame.
Earlier this week at MWC, BlackBerry announced it planned to expand its cross-platform strategy by bringing features including the much-admired BlackBerry Hub and its virtual keyboard across to devices powered by rival platforms such as Android, Windows and iOS.
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