Before you upgrade, please take note of any breaking changes and deprecation notices which may affect your site. View the Upgrade Guide to see examples of how to address breaking changes.

Deprecation notices ⚠️

  • Dropped support for IE9, IE10, and IE11 🎉 #277

Other changes

  • Updated list of supported browsers #279
    • > 1%
    • last 2 versions
    • Firefox ESR
    • not dead
  • postcss now uses browserlist config from package.json #280
  • Search and Menu buttons in the classic header can now be focused by pressing the tab key #278