During a concert at London's O2 Arena on Sunday, the Backstreet Boys officially announced that Kevin Richardson is back!OK! NEWS: BACKSTREET BOY A.J. MCLEAN ANNOUNCES WIFE'S PREGNANCY ON YOUTUBEAs reported by E! News, Nick Carter explained to the crowd, "I think we should let them in on the secret that we have. Since we love you guys so much, we are going to be back this year." Then Brian Littrell added, "And Kevin is coming back!" Read More >>