Just like the HTC U11 Edge Sense (Squeeze), the Pixel 2 will be having an Active Edge which will likely make use of the squeezable sides. According to a teardown of the Google app 7.12 APK by 9To5Google, Pixel 2 users will be able to access Google app as well as activate Google Assistant using Active Edge.
I addition to the Active Edge, Google plans to update the Google Assistant with Routines that will enable multi-action initiation, but without having to actually issue a command for each action. This feature also allows various smart products around the home to interact using Google Assistant.
Lastly, You'll be able to change the voice for Google Assistant. Currently Google Assistant is only usable with one voice and can’t be altered but that seems to be changing in the near future. Thoughts?