- October 1, 2013: moved Ambient Light Events and Proximity Events from WD to CR
- September 28, 2013: changed status of HTML Canvas 2D Context from WD to CR
- September 27, 2013: added Cross-Origin Resource Sharing
- September 10, 2013: published source on github, working on complete markdown formatting
- July 30, 2013: changed status of Web Storage from PR to REC
- July 23, 2013: changed status of Vibration API from WD to CR
- July 10, 2013: added Mediastream Image Capture
- July 4, 2013: changed status of Indexed Database API from WD to CR
- June 25, 2013: added Web Animations 1.0
- June 20, 2013: added Web Telephony API
- May 23, 2013: moved Web Intents from active to inactive list (WD to NOTE); changed status of Vibration API from CR to WD
- May 16, 2013: added The app: URI scheme and Messaging API
- May 14, 2013: added Shadow DOM, Custom Elements, HTML Imports, and Raw Sockets; changed status of Page Visibility from PR to REC
- May 10, 2013: added Encrypted Media Extensions
- May 9, 2013: changed status of Touch Events Version 1 from WD to PR; changed status of Pointer Events and HTML Media Capture from WD to CR
- April 9, 2013: changed status of Web Storage from CR to PR
- April 4, 2013: added Input Method Editor API
- March 27, 2013: added Runtime and Security Model for Web Applications
- March 12, 2013: added HTML Image Description Extension
- March 7, 2013: added Contacts Manager API
- February 28, 2013: added The srcset Attribute
- February 27, 2013: added The picture Element
- February 19, 2013: added Streams API and HTML Templates
- February 5, 2013: added Web Alarms API Specification and MediaStream Recording
- January 31, 2013: added Navigation Timing 2
- January 29, 2013: added Media Source Extensions
- January 25, 2013: changed status of Touch Events Version 1 from CR to WD
- January 24, 2013: added IndieUI: Events 1.0
- January 9, 2013: added WebCrypto Key Discovery
- December 17, 2012: changed status of High Resolution Time and Navigation Timing from PR to REC
- December 11, 2012: added Pointer Events; changed status of Server-Sent Events from WD to CR
- October 25, 2012: added Web MIDI API
- October 23, 2012: changed status of High Resolution Time from CR to PR
- October 18, 2012: added Push API
- October 4, 2012: added Web Intents Addendum — Local Services; updated title and abstract of Network Service Discovery
- September 20, 2012: added DOM Parsing and Serialization; updated status of WebSocket API to CR; added experimental classification of specs
- September 14, 2012: added Web Cryptography API
- September 13, 2012: published blog entry about HTML5 Classification, looking for ideas to improve this list
- August 22, 2012: updated abstract of WebRTC 1.0: Real-time Communication Between Browsers
- August 7, 2012: added Networked Service Discovery and Messaging
- August 2, 2012: added Ambient Light Events
- July 26, 2012: updated status of Page Visibility, User Timing, and Performance Timeline to CR, and Navigation Timing to PR
- July 25, 2012: switched from HTML to XML source, now generating this page by XSLT
- July 12, 2012: added Proximity Events and Pick Media Intent
- July 10, 2012: added WebDriver
- July 3, 2012: added Quota Management API and Fullscreen
- June 26, 2012: added Web Intents
- May 31, 2012: added MediaStream Processing API (in inactive list, missed it before)
- May 29, 2012: added Pointer Lock and Gamepad
- May 24, 2012: added URL
- May 23, 2012: added Screen Orientation API
- March 27, 2012: moved Media Capture API from active to inactive list
- March 13, 2012: added High Resolution Time
- December 15, 2011: added Web Audio API and Audio Processing API
- November 19, 2011: added Vibration API
- October 27, 2011: added WebRTC 1.0: Real-time Communication Between Browsers
- August 14, 2011: added User Timing and Performance Timeline
- July 1, 2011: added DeviceOrientation Event Specification
- June 7, 2011: added Network Information API
- June 2, 2011: added Page Visibility, Timing Control for Script-Based Animations, Navigation Timing, and Resource Timing
- May 5, 2011: added Touch Events Specification
- April 26, 2011: added Battery Status Event Specification
- April 19, 2011: added Calendar API
- April 14, 2011: added Clipboard API and Events
- April 5, 2011: marked Programmable HTTP Caching and Serving as deprecated
- March 1, 2011: added Web Notifications
- November 19, 2010: added HTML5 Web Messaging, marked Web SQL Database as deprecated
- October 26, 2010: added File API: Directories and System
- September 28, 2010: added HTML Media Capture and changed title and permalink of Media Capture API (previously Capture API)
- August 19, 2010: updated abstract for Indexed Database API
- August 10, 2010: added Messaging API
- April 6, 2010: added File API: Writer
- April 1, 2010: added Capture API
- March 4, 2010: added HTML Canvas 2D Context and HTML Microdata
- January 21, 2010: initial version