With today's unveiling of Google's (terribly leaked) Nexus 5, we're getting a first look at Android 4.4 KitKat on the handset, and that OS update comes with some significant tweaks to Search and Now.

It's worth noting that you could already use the 'OK Google' hotword to open Google Now/Assistant on AirPods (at least according to this review), but this is obviously quicker.

Next — and this is actually really great — Android Auto will get support for the “OK Google” hotword, which means you don’t have to touch anything to activate it.

Google offers a diverse collection of voice commands for Android. We list 160 that you can use to make your life easier and more efficient.