I once had a Moto X, and, aside from the crappy battery and camera, I loved it specifically because of the "always listening" feature (and the fact that it knew when I was driving and adjusted settings for reading me my texts, for instance, when I was driving). Great feature, and I miss it a lot. After the Moto X, I went to a Sony XPeria (much better camera) and then eventually wandered back into the arms of an iPhone 6 Plus. But I grow weary of Apple's stagnation, and I am looking to go back to Android (I want a new toy), provided the Pixel, and Google Assistant, are "always listening".
It looks from the replies above that the Pixel will have an "always listening" feature, but is anyone sure? Until someone, somewhere, actually demonstrates it (on YouTube or wherever), I am skeptical. It will literally be the difference between my migrating back to Android now (and Google Project Fi replacing AT&T as my carrier) vs. waiting for a major upgrade with an iPhone 8 in a year or two.