Is Britney Officially Back?

I have a confession, I liked Britney Spears Blackout cd; Circus was kryptonite to me. I was not really excited about her new cd, Femme Fatale after all, I'm not much of a fan. I just loved her choreography. I heard she was performing at Rain nightclub in Las Vegas last night. I woke up this morning and decided to see what youtube has. I am impressed by her performance of 'Til The World Ends; are you?