Google Play is upgrading your movie purchases to 4K for free
Google announced in a blog post today that Google Play customers in the US and Canada will see several upgrades to their movie-watching experience. Any movies you’ve previously purchased in SD or HD that are available in 4K will now be automatically upgraded to stream in 4K.
from https://www.theverge.com/2018/10/23/18014586/google-play-4k-free-upgrade-movie-purchases
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