I see her coming on stage, doing a little speech about her art / revolution project or whatever, introduces Macklemore on stage and then at the end of Same Loves comes and performs with them like Jennifer Hudson in the VMAs
No Katy here hopefully means no Katy on her next album too, because MDNA with Nicki Minaj was enough for one lifetime. I hope this performance means she's in the mood for a socially conscious album with a good message with ballads!