Same for me: Dell XPS 13 user, Fedora user, it all "just works" including after a recent Fedora 27 upgrade, although in fairness I did have to replace the Broadcom wi-fi card with an Intel one, due to Intel having far superior Linux drivers: http://www.alphadevx.com/a/510-Replacing-a-Broadcom-wireless...
Once I done that, I now have the perfect developer laptop (in my opinion of course :-) )