The latest update to Firefox 4 Beta is now available with new features that offer more control over your Web experience. This release lets you own and control your personal Web experience by syncing your data across devices, and by helping you organize your tabs in order to juggle and prioritize your busy online life.

What new features are in this Firefox 4 Beta update?

Stay in Sync

Fire ​fox ​Sync​ makes your bookmarks, history, Awesome Bar, passwords, form-fill data and open tabs accessible across multiple computers and mobile devices. Now, with Firefox Sync, you can customize and take your Web experiences with you anywhere, even on your iPhone with Firefox Home.

Firefox Sync encrypts all of your data before sending it to the server and does not track your travels throughout the Web. This means that you never have to compromise your privacy for the convenience of using Firefox Sync.

When downloading or updating to the latest version of the Firefox 4 beta, you will automatically be prompted to create a Firefox Sync account. You can watch this video for a step-by-step guide:

Visit the Firefox Sync page for more information on how to use Firefox Sync. For an engineer’s perspective, see Mike Connor’s post.

A Tab Revolution

When tabs were first introduced, the feature changed the way people browse the Web. To continue the tab revolution, the beta now includes Firefox Panorama (formerly Tab Candy) as a new approach to tab management that makes it easy to organize and multi-task while on the Web. If you juggle many open tabs for work, shopping, music, social sites, vacation planning and more, you can easily group and prioritize those tabs any way you want. With one keystroke you can see an overview of all tabs to quickly locate and switch between tabs or groups of tabs.

See Aza Raskin’s blog post for more details.

Better feedback, a better browser

As always, Firefox 4 Beta includes a Feedback Add-on with Mozilla Labs Test Pilot, which enable you to take part in anonymous studies. You can choose to opt-out of any or all studies by managing your settings in the Feedback button.

We value feedback from our beta testers and ask for continued feedback on Firefox 4 Beta. The feedback is used to help improve future Firefox Beta releases.

Firefox 4 Beta testers will receive automatic updates, so stay tuned for the next release in the coming weeks.