This is the XPS-13 at $1549 in “developer version”. It’s an “Ultrabook”TM with that other OS. I guess it’s a nearly optimal notebook with GNU/Linux although I would prefer Debian GNU/Linux instead of Ubuntu GNU/Linux.
I still don’t get why Dell doesn’t sell small cheap computers that run GNU/Linux in USA. They do in India/China. USA certainly does have millions who could afford a small cheap computer but not an Ultrabook.