It's heavily optimised for quick contextual queries. I hit the microphone and said "<supermarket name> <my town> opening hours" today and it simply replied (aloud) "<supermarket> is open until 21:00". This is great stuff, but it still feels like a voice interface to Google vs a personal assistant like Cortana or Siri
Feel free to say "Hello" to get a quick tutorial of the assistant features. The Google app understands searches as well as assistant-like features (like "send a text" or "open Facebook")
