It’s official. Virgin Fest, now renamed the Virgin Mobile Festival to apparently attract the mutant cell phone/music market, is coming back to Pimlico Race Course in Baltimore on August 9 and 10. In the past, DCist has been there to blog the festivities, so it’s a given we’ll be providing the latest news as it comes in. Once again, area concert promoters I.M.P. (the folks behind the 9:30 Club and other major area venues) are…