As Android Police first discovered, you can now enable or disable Wi-Fi, Bluetooth, and the flashlight with just your voice. For instance, just say "OK Google, turn on Bluetooth," and voila. This feature only works on the latest version of Google Search on Lollipop, meaning those with KitKat and older versions of Android are left out of the party for now.
The change comes after Google last year first added support for settings toggles through voice commands. Until now, however, the option has only opened up a shortcut to the corresponding settings panel, meaning you still needed to manually make the change with your finger — not very helpful. The latest update finally makes things work as they should.