UPDATE 2-BlackBerry shares rally on AT&T launch, takeover hopes
* Lenovo CEO says may consider BlackBerry deal in the future
* AT&T says BlackBerry Z10 to hit store shelves on March 22
* Analyst sees margins moving higher with new device sales
* BlackBerry shares up 12 pct on Nasdaq, TSX (Adds comments by Lenovo CEO, company background, updates share price)
By Euan Rocha
TORONTO, March 11 (Reuters) - BlackBerry shares rose 12 percent on Monday, fueled by takeover speculation and news that AT&T Inc will start selling the new BlackBerry Z10 touchscreen smartphone in the United States on March 22.
The CEO of China's Lenovo Group Ltd told a French newspaper on Monday that the personal computer maker might consider an acquisition of Canada's BlackBerry at some point in the future.
"External growth remains a question of opportunities," Yang Yuanqing told Les Échos in an interview.
"As for BlackBerry, the file could eventually make sense, but I must first analyze the market and understand the exact weight of this company," he said in response to a question about whether the company would make a move on BlackBerry. Continued...