Instead of typing out a search query, you’ll simply need to tap the microphone button.
That’s the future of search, as put together by Google for any tablet, phone, laptop, or whatever else you may have. By taking the exemplary technology from Google Now, you can now ask for specific information (like an email inside of Gmail, or photos you took on Google+) and will receive an answer. This goes for upcoming flight(s), reservations, purchases, plans, packages and general information, like directions.
Google published a list of things it thinks you could do with the new feature that is being rolled out in the coming weeks. It’s worth a read.