Movie fans soon will be able to rent high-definition DVDs at select Blockbuster Inc. video stores in Eastern Washington, but only in Blu-ray format – a setback for those who've invested in competing HD DVD players. Stores in Spokane Valley, Pullman and Richland are expected to be among 1,450 more nationwide to offer the next-generation discs starting July 10, said Randy Hargrove, a Blockbuster spokesman. The nation's largest rental chain announced its choice Monday, lending its support, at least for now, to one side of the "format war" between rivals Blu-ray, backed by Sony Corp., and HD DVD, supported by Toshiba Corp.