Recently I watched the State of the Word 2018, delivered by Matt Mullenweg. I really think people who are interested in the future of WordPress, but also the future of internet publication in general should have a look at it. The roadmap for Gutenberg is very exciting. I am very positive about what lies ahead.
They are currently in phase 1 regarding the development and implementation of Gutenberg, the latter focusing specifically on writing and editing posts/pages. With phases 2, 3 & 4 they will be going beyond this.