4K time-lapse coming to 5D4?

I find the built-in time-lapse function in 5D4 handy when the conditions are right, but why just HD and no 4K time-lapse?

The 6D II (which can't shoot 4K movies) has 4K timelapse. What do you think, will Canon add 4K time-lapse in a coming firmware update? A quick look in the 6DII user manual reveals a much better integrated time-lapse function with some usable features that's not available in 5D4. Shouldn't be impossible to get those in a firmware-upgrade for 5D4.