If you are new to WordPress, first of all welcome, you might have heard talks about the “new editor”, “project Gutenberg”, the “old editor” etc. All these might sound confusing, so let’s clear things up a bit. The block editor is the set of content creation tools made widely available to users in WordPress v5.0. It is part of project Gutenberg and according to the project’s official page:
It’s a whole new way to use WordPress
In a bit more detail, according to project’s handbook:
“Gutenberg” is the name of the project to create a new editor experience for WordPress. The goal is to create a new post and page editing experience that makes it easy for anyone to create rich post layouts.
The block editor was the first phase of the project, it allows users to create content using units called blocks, instead of free-form text with inserted media, embeds and Shortcodes. The next phases include full page editing capabilities such as creating and managing navigation menus, sidebars, widgets and more.