1. Audio element
  2. Canvas (basic support)
  3. Color input type
  4. contenteditable attribute (basic support)
  5. Datalist element
  6. dataset & data-* attributes
  7. Date/time input types
  8. Details & Summary elements
  9. Drag and Drop
  10. Form validation
  11. HTML5 form features
  12. input placeholder attribute
  13. New semantic elements
  14. Number input type
  15. Offline web applications
  16. Progress & Meter
  17. Range input type
  18. Ruby annotation
  19. sandbox attribute for iframes
  20. Session history management
  21. Text API for Canvas
  22. Toolbar/context menu
  23. Video element
  24. WebGL - 3D Canvas graphics