4K means multiple things and we just have to get used to it. There is the DCI 4K native resolution of 4096x2160, 4K UHD of 3840x2160, and then there is the 4K in 16:10 at 4096x2560. Of these the UHD is likely to be the thing anyone cares about because it's what TVs will use. The native DCI resolution is probably the least interesting, because actual content will have different resolutions in practice depending on the actual aspect ratio being used. In a computer monitor however I'd prefer the 16:10 version instead of the 16:9 of UHD.
I agree. I mean that most people will care about because most people will be buying TVs not monitors, and content for their TVs, etc. So there is a good chance that 4K as a term will be most commonly used for TVs not monitors.
