What is Gutenberg?

Gutenberg is a brand new content creator and editor coming soon to WordPress 5.0. The Gutenberg editor uses blocks to create all types of content, replacing a half-dozen inconsistent ways of customizing WordPress, bringing it in line with modern coding standards, and aligning with open web initiatives. These content blocks transform how users, developers, and hosts interact with WordPress to make building rich web content easier and more intuitive, democratizing publishing — and work — for everyone, regardless of technical ability.

Visit the official Gutenberg page for more info on the project. You can download Gutenberg here and take it for a spin.