Question [Q] Screen casting with Chromecast????

So I noticed the recent updates Google Play services updates and the Chromecast aoo recieving an update. Just today when I went to leave my house to turn off my phone's Wi-Fi radio I notice I get the "Cast Screen" option. I thought "Oh wow. This is new." So I tapped the option to cast screen and next thing I know is "Hey, I cast cast my phone's screen now using the Chromecast." When I tried to cast my screen it doesn't work. Does anyone here who have a Chromecast has this new option now?
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