Yawn
The Pixel phone: a direct challenge to the iPhone - All high end Android phones are very good challenges to iPhone already
Google Home: Amazon's Echo but in a smaller, curvier format - My Android phone already does this. "OK Google, Listen to Led Zeppelin"
Daydream virtual reality headset: cheaper and more comfortable than Oculus and others. - Posh Google Cardboard. Oculus is essentially dead anyway (since we have seen PlaystationVR)
Chromecast audio and video streaming: with multi-room support. - Existing Product.
Google Wifi: a mesh system of routers aimed at stealing an emerging market. - Existing Product.