In this March 22, 2011 product image provided by Research In Motion Ltd., the upcoming BlackBerry PlayBook is shown. Research In Motion Ltd. says its tablet computer, the BlackBerry PlayBook, will start selling in the U.S. and Canada on April 19 for $499 to $699. (AP Photo/The Canadian Press, Research In Motion) NO SALES

In this March 22, 2011 product image provided by Research In Motion Ltd., the upcoming BlackBerry PlayBook is shown. Research In Motion Ltd. says its tablet computer, the BlackBerry PlayBook, will start selling in the U.S. and Canada on April 19 for $499 to $699. (AP Photo/The Canadian Press, Research In Motion) NO SALES