Wodpress 5.0 Beta release is now available for public testing. To test WordPress 5.0, you can use the WordPress Beta Tester plugin or you can download the release candidate here (zip).

What is new

• Gutenberg in now the main editor – 
   This is the first step toward an exciting new future with a streamlined editing experience across your site. You’ll have more flexibility with how content is displayed, whether you are building your first site, revamping your blog, or write code for a living.

• Twenty Nineteen is WordPress’ new default theme with Gutenberg integrated to the theme. 
• All  default themes have been updated to support the block editor.
• PHP 7.3 support
• JavaScript language packs  added making easy for developers to
   add translatable strings directly to your JavaScript