'It will take some time — we’ve had 15 years to polish and perfect core, after all'

This makes me cringe. Core works, but it's a mess that desperately needs cleaning and updating to modern PHP standards.

I hope there will be a release date on the table. What Gutenberg mainly needs is a firm confirmation that it will not be send out buggy (a previous update last week crashed any custom post type, just to name something ) .

The community will be ready when Gberg is something that works intuitively and will not result in a rollercoaster of updates, unpredicted results and more updates. That's ok for a hobby site, not something you want to base a business on.