To the best of my knowledge, w360 only has plans to offer it as an add-on sold separately (via w360mod.com) at this point.
I noticed on w360's website that he used older images of the glass window. I know this isn't your department, but will the v6 window look like the past iterations or will he opt for the full glass panel route? Tried contacting w360 about this but no reply ☹