Special to the Director's Cut Blog By Mike Snider, USA TODAY The race is on to get new 3D TVs into stores - and homes. Panasonic plans to have its first 3D HDTVs in stores next week. (Model and pricing information have not yet been released.) Samsung's first 3D models - 46-inch and 55-inch flat panels starting at $2,340 - are available for pre-order on Amazon.com and Sears.com for shipment as early as this week. Mitsubishi today brings to market $129 XpanD 3D glasses that will turn many of its existing televisions into 3D sets. The TVs include models sold during the past two years that were marked "3D-ready." 3D TVs from Sony and other competitors are close behind. "Our belief is that the American consumer has experienced 3D and thinks it is pretty cool," says Bob Perry, Panasonic senior vice president. "There is a great opportunity to create a different (3D) experience in homes and in theaters." 3D Blu-ray movie discs and broadcasts a...