does not appear to have 8700 listed. The newest BIOS they have is still dated July 31, 2015. What good is Dell does not provide BIOS patches to address this bug when they actually are the authorized OEM desktop vendor when Intel assure they will work with their channel partner to address this. <Legalistic statement removed>and Intel before they start putting the resource to work on these bugs?
Older computers may take more time to update, or the BIOS manufacture has not come up with anything yet and Dell is waiting on them. Regardless you will want to post this on the Desktop XPS forum here.