HBO announced Monday it has ordered a seventh season of its American vampire drama \"True Blood\" to air next summer. \"\'True Blood\' remains a signature show for HBO, and a true phenomenon with our viewers,\" HBO Programming President Michael Lombardo said in a statement. \"Thanks to Brian Buckner and his talented team, the show continues to be a thrill ride like nothing else on TV.\" HBO went on to say the Anna Paquin-starring series is \"exceeding 10 million viewers per episode.