I recently checked and only 3 models of the entire Dell line-up offer Linux OS (1 model is XPS Developer edition).
Basically it seems that Dell abandoned Linux compatibility with new models.
Basically it seems that Dell abandoned Linux compatibility with new models.
This link shows their Linux lineup. Seems they cover all 3 laptop sizes 13/15/17 both in an ultra book form factor and a bulkier port rich model. What more were you hoping for? I personally think it's a good thing they limit the pre-installed Linux models to their professional/business line of laptops. Supporting Linux on every model is probably a waste of time.