Below is an old concept image for the Xi'An Volper and an Old RSI post so this isn't really a spoiler. It has been in the works for some time now...
Xi’an VolperConceptConcept Ready
Some may consider the below a Spoiler.... SPOILER
Big-Bad-Wolf on Reddit did find what is likely to be a new concept image for the ship on a quick screen shot on an older (but recent) ATV....
^^^ In the Upper Left Corner is likely the Volper with the Xi'An Cargo Ship (which we have seen leaked) in the upper middle and upper right would be the Khartu-Al. The Right side of the screen is inspiration photos and common patterns created for the Xi'an.
Below is the link of ATV from which this comes from...
https://youtu.be/ZnQtZ_D1D7Q?t=2427