I doubt in US it will ever work... I found that very annoying when I was looking at Audi Q7 as well. Also, my wife had an issue with reaching the button on Q since trunk was open full height and I bitched to the dealer about that.
I was told that you can lower the height of the hatch to reach the button, but for safety reasons, they would not allow to close the hatch without anyone present at the hatch.
I am also pissed of at BMW for now allowing to close windows and sunroof from the remote, many other manufacturers allow that but apparently BMW is afraid of lawsuits and they are disabling this function in US.
I hear that European software allows closing of the windows and sunroof from remote for European cars, I would not doubt this functionality being extended to Auto Hatch for European X's