Missing Software From 9550 Support Page

Looks like Dell suddenly pulled most of their software from the support site for the XPS 15 (9550) See:https://www.dell.com/support/home/us/en/04/product-support/servicetag/CD5F462/drivers?s=DHS

For example, the bluetooth drivers, the color tuning app, and others are suddenly gone. This coincided with the Windows 10 November update and much of the missing software is now available from Windows Update. However, some of the software is not (the display color tuning software), for example is now gone and doesn't seem to be available anywhere.  Any insights?