Andrew Nacin who is one of the core developers of WordPress has published an extensive field guide for developers regarding WordPress 3.3. The guide contains links to relevant articles and discussions on the WordPress developers blog such as admin bar API changes, Javascript and editor changes, Help screen along with API changes, etc. All developers should take note of the links published by Andrew so you’re well prepared for the release.
And whoever it was that fixed the misterious comment closing ‘feature’ a few months ago. . .
it’s baaaack.