Research in Motion (RIMM) plans to enter the retail market this fall with a clamshell flip version of its BlackBerry Pearl smartphone. The BlackBerry Pearl Flip 8220 offers multimedia features such as a video and music player and a 2-megapixel camera. Like the original Pearl the new flip model includes a Web browser and a SureType Qwerty keyboard. The new device weighs 3.6 ounces and measures about 3.9 inches by 1.9 inches by 0.7 inches. BlackBerry says the Pearl Flip offers voice activated dialing conference calling speed dialing call forwarding and background noise cancellation. "The popularity of BlackBerry smartphones ...