Even with an ongoing patent infringement lawsuit between the two companies, Sonos and Google are working on new features to benefit its users. You can now use Sonos speakers as the default playback option for Google Assistant. So, if you request a song through Google Assistant, it can automatically play on the paired Sonos speaker. Google Assistant will let you have multiple default speakers, so different Sonos devices can be paired with different Google devices. You can set this up through the Google Home app.
Source: The Verge