To further illustrate the Android fragmentation problem, Android Jelly Bean is on more devices than Android Nougat, despite the fact that Google moved on from it four years ago. There are no major apps that require a new Android OS version that no one has. This feature will be available for the devices running Android O or later. It's called Project Treble, and Google says it's the "biggest change yet to low-level system architecture".
Following some devices accidentally receiving the May security patch a few weeks early, the OTA is now officially rolling out. It is to be seen whether manufacturers might have to update the Android code in order to ensure that the features that are specific to the particular device are working. And if you don't have a flagship phone, you're lucky to get an update at all. If you would rather wait for the over-the-air update to hit your device, you can do that as well.
Google is basing the system on its Compatibility Test Suite, the system that allows developers to push a single app to hundreds of different phones and tablets, regardless of screen size and hardware. Let's say that mobile phone brands will depend more on their support service to launch updates, avoiding an obstacle that has caused many terminals to finally run out of updates, those that introduce a new version of Android. In a nutshell, it aims to significantly lessen the burden on third-party phone manufacturers so they can deliver updates in a timely fashion. The core concept is to separate the vendor implementation - the device-specific, lower-level software written in large part by the silicon manufacturers - from the Android OS Framework. With Project Treble in place on Android O, device manufacturers such as Samsung will be able to release Android updates to their devices without waiting for chip partners such as Qualcomm to first release their own software updates. While VTS-compliant silicon vendors can choose to easily update to a new Android OS, Project Treble would only enable a "hands-off" OS update if OEMs use unmodified stock Android.
That being said, we should hear more about the new initiative come Google I/O 2017 next week.