starting from when the device first became available on the Google Store in the US
Why don't they just list the date (or even the 'available on store' date) for each device? It would be a lot simpler for people instead of having to hunt for the info themselves
Maybe the management hasn't decided on the exact promises they're willing to make? Also there's two years left before it becomes important, while previously there was always a generation going out of support within a year.
Good news, although I've been holding off on updating to 15 as, last I heard, it was causing issues with Pixel 6 Pros. Not sure if that's been solved yet, need to go have a look.