A new update is rolling out to the Google app that bumps the version to 8.2. It includes a cool new feature, letting you customize Pixel Buds 'Spoken notifications' for individual apps.
Earlier, you could either enable the feature for all apps, or disable it completely. But now, you can enable/disable the functionality (that allows app notifications to be sent to headphones) on per app basis.
The update is currently rolling out, so it may take some time before it's available to everyone.
Oh, and yes, the slider that lets you completely disable the feature is still there.