Hours ago,WordPress 2.9 was officially released.It isn’t a major upgrade,however,some cool functions are still giving us a reason to make an upgrade.The whole upgrade procedures are very easy.You can upgrade easily from your Dashboard by going to Tools > Upgrade, or you can download from WordPress.org.
The official video clips introduces all things about the new release.Here we go:
The cool points of the new version for the users are:
- Global undo/”trash” feature, which means that if you accidentally delete a post or comment you can bring it back from the grave (i.e., the Trash). This also eliminates those annoying “are you sure” messages we used to have on every delete.
- Built-in image editor allows you to crop, edit, rotate, flip, and scale your images to show them who’s boss. This is the first wave of our many planned media-handling improvements.
- Batch plugin update and compatibility checking, which means you can update 10 plugins at once, versus having to do multiple clicks for each one, and we’re using the new compatibility data from the plugins directory to give you a better idea of whether your plugins are compatible with new releases of WordPress. This should take the fear and hassle out of upgrading.
- Easier video embeds that allow you to just paste a URL on its own line and have it magically turn it into the proper embed code, with Oembed support for YouTube, Daily Motion, Blip.tv, Flickr, Hulu, Viddler, Qik, Revision3, Scribd, Google Video, Photobucket, PollDaddy, and WordPress.tv (and more in the next release).
The new WordPress also ensures the smoothest experience as it’s out of thousands of bugs which exist in the previous versions and many improvements have been done here.So I think you’d better to make the upgrade as soon as possible.The benefit is GREAT! 
