The former X Factor winner told The Hits Radio that she could not yet reveal which events she is booked to play.
Burke said: "There's gonna be tons of festivals I've confirmed to be in. Oh my God, this summer is gonna be ridiculously busy.
"I've seen the schedule but I can't say which ones I'm in because they haven't released it to the press yet and it has to be them that's done it."
She added: "But I know I'm confirmed on T4 and I can now talk about it, thank God, because they confirmed it on TV.
"This is my first year doing festivals, because this time last year I was recording the album, so now this is my time to get out there."
Burke also revealed that she would announce a full headline tour of her own in the near future but would not take to the road until 2011.
"I want to use this year to promote, promote promote, I'm not in a rush to tour - I feel I need some more songs under my belt," she said.
"I want to make sure that I'm not going in to doing a tour for the covers because I don't believe in that. I want you guys to hear my material, to be able to sing back maybe for some of them.
"I'm working hard on that and trying to find my band at the moment. I'm taking it step-by-step and I'm in no rush to tour, because I want to make sure I give you guys a beastly show."