I'm able to find the Windows version [0], as well as the XPS 13 Developer Edition [1], but no XPS 15 Developer edition.
I just want my 15 inches. I did 13 for years and the pain still haunts me.
[0] http://www.dell.com/us/business/p/xps-15-9560-laptop/pd
[1] http://www.dell.com/learn/us/en/555/campaigns/xps-linux-lapt...