There’s a lot of stuff available in 4K on Blu-ray but not on iTunes yet, it will be to do with licensing issues.
Apple updates movies to 4K all the time, but as I’m sure you can appreciate it’s quite an undertaking to update every movie so it will be 4K eventually.
I’m also building a digital library on the Apple TV app atm, my current method is to look at the 4K page each week and see what 4K movies on offer and buy the ones I like. (4K page isn’t on iTunes, use the Apple TV app).
There’s a lot of stuff available in 4K on Blu-ray but not on iTunes yet, it will be to do with licensing issues.
Apple updates movies to 4K all the time, but as I’m sure you can appreciate it’s quite an undertaking to update every movie so it will be 4K eventually.
I’m also building a digital library on the Apple TV app atm, my current method is to look at the 4K page each week and see what 4K movies on offer and buy the ones I like. (4K page isn’t on iTunes, use the Apple TV app).