Don’t update your WordPress theme yet to WP 5.0 & Gutenberg. Why ? Because your old WordPress theme may start acting up or there will be parts that will not work. What is the story with the new block-based editor called Gutenberg ?

Gutenberg is a complete redesign and re-imagination of the WordPress editor. With the new version of WordPress already here – WordPress 5.0 – the default way that people create content with WordPress has changed radically.

What’s new with Gutenberg ?

Gutenberg affects themes and plugins too

Aside from your own editing experience, Gutenberg also brings important changes to a lot of your favorite plugins and themes. For example, we’ll probably see the emergence of a lot of Gutenberg-friendly themes, which will be designed to take advantage of all the new features the editor offers.