Photo by Moritz Kindler on Unsplash
If you missed that update, you no longer need to say "Hey Google" before telling your Google Assistant-powered smart home speaker or display to stop speaking. Now, you can just say "stop" for it to work. This feature comes in handy when the device is reading out your schedule or news and you've reached a point where you got the information you needed. It's a minor update, but it does make the interaction more natural.
As The Verge pointed out, this isn't a universal "stop making sounds" feature. And Google didn't say it was one anyway. Of course, when you're listening to a song, you still have to say the magic words, a.k.a. "Hey Google."