I noticed a thread on Reddit today where people were speculating about why the Dell XPS 13 Developer Edition was no longer available on the store. There are some rather wild guesses, but I wanted to try and find out the real reason behind the change. I communicated with Barton George via Twitter and received the response below.
It would appear that Dell is pausing production to put in some of the fixes listed on their knowledge base. No need for panic folks.