WordPress 3.5 Beta 3 has been released. Since the second beta, this beta has added more than 300 changes, including a new Add Media dialog.
The developers are forecasting the final WordPress 3.5 release to be in a few short weeks. This particular beta is still is not meant for live sites, but please do try it on a test installation, especially if you are a plugin or theme developer. If you run into any bugs, please check the known and fixed issues first, report them if they have not already been reported or fixed, and visit the support forums if you need any help.
Going to try WordPress 3.5 Beta in one of my new blog. WordPress rocks!