I can also remember an interview about a softer album. I think it was Jonas who talked about that. He didn't say it would be in the next album, but that he would like to do one sometime in the future, I think...
I wait another masterpiece, don't care will it "soft" or not. But LFDGD is still my favorite album, so It will be great if the next album will be full of light and hope like Last Fair Deal=)