But not without finding the second mic icon (upper part of the screen) and then talking - it's now a two step process for what used to be one step, and it's more difficult for me while driving. (My eyes just don't re-adjust that quickly from road to phone screen... what can I say, I'm old!) This truly is a step backwards for this phone. Same thing with opening Navigation and doing it from there. Smaller icons/middle of the screen versus one place - bottom right of the phone without even looking.
Hmm. I just tapped the mic on the lower part of the phone. It opened up Google Now. I spoke "Google" and then it was ready to receive my commands. I said "Navigate to work", and it took about 1-2 seconds and it opened Google Navigation with voice directions to my work. Works just fine for me.