Concerning the very short-notice release-announcement of WordPress 5.0 with Gutenberg for Dec 6th: I’m with Yoast;
He has a great “should I update”-checklist and conclusion in this blogpost;
- Is now the right time to update?
- Can your site work with Gutenberg?
- Do you need it?
So our advice boils down to: if you can wait, wait.
So if you have a busy end-of-year, if you’re not 100% sure your site will work with Gutenburg or if you don’t really need Gutenberg in the first place; wait (while WordPress 5.0 stabilizes with some minor releases).