It’s the first release since WordPress 2.5 went to public.This bug-fixed release covers more than 70 bugs in 2.5 version,therefore the user of WordPress should be better to upgrade it into this latest version.

The key changes are:

• Performance improvements for the Dashboard, Write Post, and Edit Comments pages.
• Better performance for those who have many categories
• Media Uploader fixes
• An upgrade to TinyMCE 3.0.7
• Widget Administration fixes
• Various usability improvements
• Layout fixes for IE

There are thousands reasons to get upgraded,right?