I doubt they'll do a new certificate, as that's apparently stuck on a
read-only partition in the memory drive of each device. The guess of
someone smarter than me is that they'll change the sender's software (eg
Google Play Services, Youtube app, Chr...
My guess is it will take at least a week. They have to fix all the
software that can interface with the streaming devices whose
certificates have expired. Google Nest, Google Home on Android, whatever
support layer that is used by Spotify and other s...