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This is great news for many of us who run Linux desktops. As this is one of the 2 laptops Dell delivers preinstalled with Linux in the dell.com/ubuntu program.
About 4 months ago I got an XPS 15, with almost identical specs ( 256 SSD, 16GB Ram, 4-Core i7 CPU, etc. ). But I had to void my warranty minutes after I opened the box to replace Windows with Ubuntu, so I'm basically on my own support-wise after spending north of $2K.
This laptop would have been perfect for someone like myself and hope its Linux configuration makes enough sales so that it's still around when I need a new computer 2-3 years from now.