What is the User Agent string for Apple TVs running the new Apple tvOS operating system (which I believe is based on iOS)? Do they report themselves as being "iOS" devices?
The Apple TV does not support the WebKit framework, meaning you can't technically show webpages and therefore have a User Agent.
However, if you somehow had it running one the new TVOS, the User Agent would definitely be :
Mozilla/5.0 (Apple TV; CPU iPhone OS 9_0 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13T534YI