Google is likely to host an event in October where the manufacturer will be exhibiting a new Chromecast. Now, new tasks have come to the fore with the coming unit.
It looks like the next Chromecast will have a yellow color power button, at least if you buy the white Chromecast. Of course, it's still to be seen if this is correct, but given that Pixel 3a will have a yellow power button if you buy it in white, it wouldn't be my t surprised if Chromecast gets the element of the yellow color.
But it's still to see!