We've lived with two-year software update for so long that getting an extra year is a big deal. And it seems Google is willing to give this to it Pixel 2 and 2 XL owners. The tech giant just updated its support page showing that the new Pixels are getting three years for both security patches and software updates. Security patches have had the three-year promise for a while but the software update extension is definitely a welcome change. And if Google continues to release Android updates on a yearly basis, then it's possible your Pixel 2 will receive up to Android R by the year 2020. 

Source: Android Police