It is not real 4K in any material way due to the animation being rendered in 2K. Studios have upscaled the 2K image to 4K for your 4K UHD TV. You should see some visual improvement over a standard 1080p Blu-ray. Animated CG movies scale up very well and can look like Real 4K. Check the information below to see if the studios have upgraded the video with HDR or added immersive Dolby Atmos or DTS:X audio tracks.
Animation Rendered in 2K
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A cooler-than-ever Bruce Wayne must deal with the usual suspects as they plan to rule Gotham City, while discovering that he has accidentally adopted a teenage orphan who wishes to become his sidekick.