I am about to buy the new fully loaded XPS 16.  I currently have a top-end fully loaded XPS 15 9500.  I travel a lot and am a photographer, so I want to charge my phone, laptop, tablet and all camera batteries using a small 240-watt USB-C PD 3.1 GaN muliti-port charger.  I bought the new 240-watt Anker PD 3.1 GaN charger that will deliver 140 watts to a laptop via USB C PD 3.1.  Of course, the PD 3.0 spec limits to 100 Watt.  PD 3.1 can go to 240.  But Dell has always limited the input of non-Dell chargers to 60 watts.  I think my XPS 9500 will take 90-watts from my 140-watt USB-C PD 3.2 charger. But I get the warning that it is not charging full power and to change to the Dell 130 watt charger.   
So, the question is, will the new Dell XPS 16 TB4 ports be PD 3.1 compatible? Will it take the full 140 watts from my Anker USB-C GaN PD 3.1 charger?  I have the 240-watt rated USB C to C cable.  I certainly don't want to carry around a Dell 130-watt proprietary brick on my travels.