NO, DO NOT APPLY ANY SUBSCRIPTION TO COMCAST after the death of Net Neutrality in the US! You should be better off with other ISPs if you want to use Apple TV with it. Not to mention that Comcast had recently merged with Time Warner Cable which is currently awaiting approval and that we must stop that from happening. This is an absolute bullshit collaboration compared to what Microsoft was planning with Xbox TV service for Xbox One! Is Apple lying about protecting their customers from the spying agencies or something?
Perhaps you may be better off with the other standard Set-Top Boxes and other ISPs to play fucking safe!