Hate to be that guy, but HD resolutions are only up to 1920x1080 pixels. Yoda viewing himself in 4k would instead be a UHD resolution. Still a solid joke though.
I wonder where naming schemes are going from here. We got HD, FHD, UHD, and now 8k is FUHD (Full Ultra HD). Are we gonna get Super HD? Super HD that is beyond Super HD? Super HD God?