iOS and jailbreak developers Steven Troughton-Smith and Nick, who goes by the Twitter handle @TheMudkip, have hacked together a working window manager for Apple TV, paving the way for the possibility of iPhone and iPad app compatibility on the non-touchscreen device.
I rewrote SpringBoard from scratch using only QuartzCore. MobileX isn't linked against UIKit.
[The control scheme involves] remote events from an iPad. Or a cursor controlled by an apple remote.
It might be a while before we actually see this publicly available but the idea is as exciting now as the original jailbreak apps were back in the early days of iOS, before the introduction of the iOS App Store.