In reply to Gary.

Maybe it is time to properly and transparently state that gutenberg is going to break all kind of backward compatibility, instead of ignoring the real issue?

While automattic have an interest in fixing the mobile apps for users of wordpress.com, what about all the other client and publishing tools? who will fix them? how will site owners with a "one off" app, will even know that there is anything to fix?

Will this be announced only at the release of 5.0 when it might be late to do anything about it?