Walter Cronkite taped the announcer's opening of the CBS Evening News with Katie Couric that is being used during rehearsals for the new show, which launches on Sept. 5, the Philadelphia Inquirer reported today (Friday), citing CBS insiders. The newspaper said that no decision has yet made on whether the "open" will be used when the show goes on the air. "We're not ready to confirm any of the details about CBS Evening News that have not already been announced," a network spokesperson told the Inquirer.