This week, Roku is increasing the screensaver’s resolution to 1080p; it was still stuck at 720p until now — despite running on millions of 4K Roku TVs and 4K-capable streaming players.

That includes the ability to make your own screen savers from portraits in your iCloud photo library, or from favourite Apple TV+ shows – such as Snoopy. The Apple TV 4K box is available in two ...