I think it's if you purchase before a certain date in October, but I could be wrong. It looks like it's not every device that'll get the upgrade as well. On my phone an SD film purchase I have still says "SD", but on my Switch that film now says "4K" - to be honest I can't really notice any difference.
Isn’t all google play stuff going to get free 4k upgrades eventually? Think I read that here on another hukd deal.
These Google Play discounts are not in 4K sorry, either SD/HD. I've updated the listing to clear this up. :)
Unfortunately not sorry! I've updated the listing to make this more clear. :)
Not sure, £39.92 on iTunes and that’s 4K