The statement came via a Reddit Ask Me Anything, where Rigopulous answered the first question on all fans’ lips:
Of course I was sad when Rock Band passed its (first!) peak, but one way or another, it will be back.
I think there’s probably some truth to the notion that Activision ‘over-published’ Guitar Hero. But I wouldn’t agree that the decline of the genre was ‘entirely the fault of Activision’. Reality is always more complicated than this. For example, it didn’t help that [Guitar Hero] and [Rock Band] were the most expensive video games on the market during a brutal recession. I also don’t think that either [Guitar Hero] or [Rock Band] delivered enough (or the right kind of) evolution of the experience in the years that followed the initial releases – something we hope to address at some point in the next outing.
Music is a permanent aspect of the human experience, and so is gameplay. It’s Harmonix’s job to figure out new ways for music and gameplay to amplify each other’s emotional power. Stand by.