What’s New in WordPress 5.1?

Inspired by Archie Bell & The Drells, WordPress’s theme for 2019 is to “tighten up”, and WordPress 5.1 focussed on exactly that.
With security and speed in mind, this release introduces WordPress’s first Site Healthfeatures. WordPress will start showing notices to administrators of sites that run long-outdated versions of PHP, which is the programming language that powers WordPress.
Furthermore, when installing new plugins, WordPress’s Site Health features will check whether a plugin requires a version of PHP incompatible with your site. If so, WordPress will prevent you from installing that plugin.
The new block editor has kept improving since its introduction in WordPress 5.0. Most significantly, WordPress 5.1 includes solid performance improvements within the editor. The editor should feel a little quicker to start, and typing should feel smoother. There are more features and performance improvements planned in upcoming WordPress releases, you can check them out in the Gutenberg plugin.