[madeofpalk]

Apple TV has always been based on iOS, but was 'forked' a while ago and has diverged a lot since then.

Initial reports suggested that this 'new' tvOS is based on iOS 9, which makes sense seeing as it's using a lot of iOS API's and frameworks

[savoytruffle]

Recall the 1st generation Apple TV (announced in autumn 2006 and sold until 2010) was actually using a version of Mac OS X on an Intel CPU.

[steckerbrett]

Yes, that's an exception though. Very weird device really.

[alttab]

Depending on how they structure the teams and how they share their code, this will either go well, or very, very poorly.