[cryptoz]

Depends. No such criticism can be said of Android as an OS, but you could certainly make good arguments directed at the ecosystem in general. The interesting thing here isn't that the upgrade isn't compatible, it's that most people would expect Microsoft to support older systems. It's a break in their character. Maybe a good one? We'll see.

[barista]

So it is delivering an update for those phones too. Additionally there is a promise to support OTA upgrade of all released devices for 18 months. What android phone has that commitment?

[cryptoz]

> What android phone has that commitment?

To the best of my knowledge, all pure Android phones have that, plus more in some cases (the Nexus line). Additionally, many of the higher-end ones from other manufacturers likely do as well.

[barista]

Source?

and what percentage of android phones are these pure android devices?