No device is abandoned. For the Nothing CMF Phone 1 tetris the plan is to jump to A16. I guess I had mentioned this earlier in another post.
The only case in which a device would not get a A16 would be if the device does not support A16 for whatever reason. For example, very old devices may not work with latest OS versions.
CMF should also receive v4.0. It is a staggered release, and the entire release process will take a week to complete.