This new requirement could significantly change the kinds of games developers are able to target for the new system -- the new Siri remote is certainly more capable than the one it is replacing, but it's still not the ideal game controller. And at least one notable game -- Guitar Hero -- is clearly not going to work with the Siri remote. It's possible Activision has a deal with Apple here, but that won't help the other developers who may have already started building Apple TV games with specific third-party controllers in mind. It's still over a month before the new Apple TV launches, so we'll likely here more on this front as developers continue to try and get their games ready for Apple's latest app store.