Firstly, I hope the cotton background is the foundation-style for Mac OS X.8 and iOS 6, I love it.
Secondly, if iOS for Apple TV was updated to look like that, I would muster up the £100 and just go out and buy it. Providing it also had an App Store (gonna need that one).
Thirdly, I think I'll be more excited by the hardware changes in a third gen. Dual-core 1.3ghz Apple A5, PowerVR 543MPC iGPU and 1GB of RAM. Maybe perhaps a Thunderbolt port...