The high-definition-video war may be over now that Toshiba has conceded defeat for its ailing HD DVD format, but those interested in buying a high-def Blu-ray player still might want to wait for new features coming in the fall. Sure, existing Blu-ray machines can play the nearly 500 Blu-ray discs available. They can deliver gorgeous, top-of-the-line 1080p resolution on compatible high-def televisions.