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If you have multiple smart speakers in your house, you should be aware of a legal ruling that could affect how they work. After the US International Trade Commission ruled that it was violating the patents of Sonos, Google has already announced software workarounds, including the need to adjust each speaker individually instead of using the group volume controller, and users will no longer be able to adjust a speaker group's volume with their phone You can read all about the recent legal ruling that is blamed for the change here.
The ITC approved non-infringing designs that were approved by the company, when news of the patent decision broke. It seems that the product features may have to be eliminated to be compliant. We didn't think it would play out this soon, given that the 60 day period for compliance is over.
The changes seem to be a big change to the multi-room audio feature that allows you to have speakers play all at once. Instead of being able to say "hey Google, set volume to 40 percent on Living Room speakers", you'll have to change the volume for each one, using either the assistant, Google Home app, or a Nest Hub display.
A small group of users will need to use a specific app to set up their smart devices and update them, and if their speaker group contains products from other manufacturers, they may need to be updated to the latest firmware to continue functioning. In the end of the post, it says it will work to minimize any additional changes.