Google promises three years of Pixel 2 software and security updates
The problem is, however, that most of the Android crop makes do with 18 months of updates to the latest and greatest, or two cycles at best, meaning that you have to resort to some modding trickery if you want to get the new versions to your still perfectly good hardware. That, or your updates come so late, that you have already give up (looking at you, One M9 on Verizon).
Needless to say, Google wants to entice Pixel buyers with its special treatment, and usually doles out the generous promise for two years of timely software and security updates. With the Pixel 2, however, this period is extended to full 36 months, so when you buy Google's 2017 crop, you can rest assured that it will serve you faithfully and be contemporary for at least three years. Sweet.