Doctor Who: Twice Upon a Time 4K UHD (2017)

[morphinapg]

Yeah that's really weird. This gives me an interesting idea though. For short run length releases like this, particularly ones with 2K masters, could it theoretically be possible to include both a standard Blu-ray and UHD version on a single 50GB disc? Sort of how they included 3D and 2D on the same disc. Like, if you only have a standard Blu-ray player, it just defaults to the standard 1080p menu and titles, but if you have a UHD player, the menu will intelligently detect that and load a separate menu that allows for UHD playback?