Wordpress 3.2 Features

Primary release feature: faster and lighter
Refreshed dashboard design that tightens the typography, design, and code behind the admin.
HTML5 Twenty Eleven theme- Responsive design, HTML 5 and ability to have multiple rotating header
Redesigned post editor and full-screen button in the editing toolbar to enter the new distraction-free writing or zen mode

All of the widgets, menus, buttons, and interface elements fade away to allow you to compose and edit your thoughts in a completely clean environment conducive to writing, but when your mouse strays to the top of the screen your most-used shortcuts are right there where you need them.

Editor width in Distraction-free writing mode:
Alt +	Wider	Alt -	Narrower
Alt 0	Default width

Retire support for PHP4, older versions of MySQL, and legacy browsers like IE6
Admin bar has more shortcuts to your most commonly-used actions
Comment moderation screen, the new approve & reply feature speeds up your conversation management

Keyboard shortcuts are enabled on a per-user setting, and can be turned on by visiting the Profile panel in Administration > Users > Your Profile. Check the Keyboard Shortcuts checkbox to enable keyboard shortcuts for comment moderation.
Pressing a approves the currently selected comment.
Pressing s marks the current comment as spam.
Pressing d moves the comment to the trash (WordPress 2.9) or deletes the current comment.
Pressing z restores the current comment from the trash or activates the Undo when that row is selected.
Pressing u unapproves the currently selected comment, placing it back into moderation.
Pressing r initiates an inline reply to the current comment (you can press Esc to cancel the reply).
Pressing q activates “Quick Edit” which allows for rapid inline editing of the current comment.
Bulk Actions
You can also perform an action on multiple comments at once. First, you’ll need to select the comments for the bulk action, using the x key to check the checkbox for the currently selected comment. Shift-x can be used to toggle the checkboxes, inverting their state. Once you have some comments checked:
Pressing Shift-a approves the checked comments.
Pressing Shift-s marks the checked comments as spam.
Pressing Shift-d deletes the checked comments.
Pressing Shift-u unapproves the checked comments.
Pressing Shift-t moves the checked comments to the Trash.
Pressing Shift-z restores the checked comments from the Trash.

When WordPress version is updated, only the changed files are downloaded and updated
Speed is no longer an issue when using the permalink setting of page title
Embed Youtube video by just adding the link. WordPress will only embed URLs matching an internal whitelist. This is for security purposes.

WordPress will automatically turn that into a YouTube embed when the post is viewed. (Check the “Auto-embeds” check box in Administration > Settings > Media SubPanel.)

Screen Option settings can be set per user. Screen options per plugin are an option
PressThis option

The “Press This” function allows quick publishing with a special web browser bookmarklet. You can create a post by quoting some text, images, and videos on any web page.