Full Site Editing Arrives in WordPress 5.9

## The Promise Delivered WordPress 5.9 "Josephine" delivers on the promise Matt Mullenweg has been making since Gutenberg launched in 2018: Full Site Editing. The block editor now controls your entire website — not just post and page content. ### What Full Site Editing Means Before 5.9, the block editor handled content inside posts and pages. Everything else — your header, footer, sidebar, archive templates, 404 page — was controlled by PHP template files in your theme. To change your header, you edited code. With Full Site Editing, all of that is now editable through the block editor. Open the Site Editor, click your header, and modify it visually. Add a new menu item, change the logo, rearrange elements — all with blocks, all with live preview. ### Twenty Twenty-Two — The First Block Theme Twenty Twenty-Two is a landmark theme. It has zero PHP template files. Everything is defined in HTML templates with block markup. The theme includes over 40 block patterns and ships with full Global Styles support. It's minimal by default but highly customizable through the Site Editor. You can turn it into a portfolio, a business site, a blog, or a magazine without touching code. ### Global Styles Global Styles is the design system for Full Site Editing. From one interface, you can customize: - Typography (fonts, sizes, line heights) across all blocks - Colors (background, text, links) site-wide - Spacing and layout defaults - Individual block style defaults Change your heading font in Global Styles and it updates everywhere — every page, every template, every pattern. This is the kind of design consistency that previously required custom CSS. ### The Transition Begins Full Site Editing doesn't make classic themes obsolete overnight. Millions of sites run classic themes that will continue to work. But the direction is clear: block themes are the future. They're simpler to build, easier to customize, and don't require PHP knowledge to modify. The ecosystem transition will take years. But for new sites, block themes are already the better choice.