New York Times reporters Matt Richtel and Eric Taub phrase it nicely: HD DVD, the beloved format of Toshiba and three Hollywood studios, died Friday after a brief illness.... The announcement by Wal-Mart Stores, the nation’s largest retailer of DVDs, that it would stop selling the discs and machines in June when supplies are depleted comes after decisions this week by Best Buy, the largest electronics retailer, to promote Blu-ray as its preferred format and Netflix, the DVD-rental service, to stock only Blu-ray movies, phasing out HD DVD by the end of this year.