Well apparently it's overFrom ups.com:
"Effective March 26, 2020 and until further notice, we have suspended the UPS Service Guarantee for all shipments from any origin to any destination. For all U.S. origin shipments, the Service Guarantee suspension became effective as of March 24, 2020.
Commitment times for UPS Next Day Air Saver® and UPS 2nd Day Air A.M.® services scheduled for delivery on or after March 30, 2020 will be extended to end-of-day until further notice."