What’s new in WordPress 3.
Write with Confidence
From the first word you write, WordPress saves every change. Each revision is always at your fingertips. Text is highlighted as you scroll through revisions at lightning speed, so you can see what changes have been made along the way.
It’s easy to compare two revisions from any point in time, and to restore a revision and go back to writing. Now you can be confident that no mistake is permanent.
Never lose a word you’ve written. Autosaving is now even better; whether your power goes out, your browser crashes, or you lose your internet connection, your content is safe.
Better Post Locking
Always know who’s editing with live updates that appear in the list of posts. And if someone leaves for lunch with a post open, you can take over where they left off.
Support for Audio and Video
New Media Player
Share your audio and video with the new built-in HTML5 media player. Upload files using the media manager and embed them in your posts.
Embed Music from Spotify, Rdio, and SoundCloud
Embed songs and albums from your favorite artists, or playlists you’ve mixed yourself. It’s as simple as pasting a URL into a post on its own line.
[button link=”http://codex.wordpress.org/Embeds” window=”yes”]Please read for full list of which Embed formats are now supported[/button]