WordPress 5.4 (“Adderley”) was released on March 31st.
The visual editor in this version includes the new Social Icons and Buttons blocks, gradients in the Buttons and Cover block, and improved streamlining of various workflows including multimedia placement. The editor experience itself is loading 14% faster, and time-to-type is 51% faster.
Developers: There are two new actions that let you add custom fields to menu items. ✨
You can get a good technical overview of the WordPress 5.4 field guide.