W447 V Class tailgate, opening glass

[BTB 500]

Parked alongside a W447 V220 today and saw that the glass on the tailgate opened independently, which is a nice feature. Is this standard? Anybody know if it's available on the W447 Vito as well?

 

[Cruzncut]

Silver Surfer

I have the 119 sport CDI with rear window I'm certain that it's a deeper window on the V Class. Maybe if ordered from new it may be an option.