The path to WordPress 5.0 has been a rough one. With community feedback around the new editor generally split and fear about such a fundamental change generally worrying the WordPress-masses.
The team behind TinyMCE looked to ease this tension with their excellent ‘Gutenberg myth-busting: 10 answers on the future of content creation in WordPress‘ post which was published in October 2017:
It is important to note that version 4.9* of WordPress is not out yet. Version 5.0 of WordPress is not due to be released until 2018, and the new editing experience is still under constant construction.