Originally Posted by ApK
You mean the microphone in the google search field, like we've had in Chrome for a while? We've had that on my wife's pre-jelly bean android phone for a long while.
It's the google search app/google now feature
Does yours speak the answers back to you, if you ask it about the weather or if you have any meetings? and many others
On my ICS phone I have never heard it speak to me, but i haven't looked really much to see if it's possible
it's part of this, which is new to JB