Stage 4

• committee approval
• implement in two browsers
  • WebKit (WIP) (temporarily removed)
  • Chromium, patch(behind a flag)
  • Firefox (behind a flag)
• HTML Integration WIP
• WebIDL Exposed=* annotation WIP
• significant in-the-field experience
  • Polyfill
  • Near-membrane framework
• merge test262 tests
• write test262 tests

Stage 3

• committee approval
• spec editor signoff
• spec reviewer signoff
• receive implementor feedback
• flesh out naming research

Stage 2

• receive developer feedback
• committee approval
• spec text written
• spec reviewers selected

Stage 1

• presentation by @dherman