Firefox 2.0 has been released! It has better security features, search suggestions and even a spell checker (which I have already used about 5 times in this article) along with a bunch of other things. It has also switched to JavaScript 1.7 which has some new features like generators, iterators, array comprehensions, let expressions, and destructuring assignments along with all the features from JavaScript 1.6.

What’s New in Firefox 2

Visual Refresh: Firefox 2’s theme and user interface have been updated to improve usability without altering the familiarity of the browsing experience.

Built-in phishing protection: Phishing Protection warns users when they encounter suspected Web forgeries, and offers to return the user to their home page. Phishing Protection is turned on by default, and works by checking sites against either a local or online list of known phishing sites. This list is automatically downloaded and regularly updated when the Phishing Protection feature is enabled.

Enhanced search capabilities: Search term suggestions will now appear as users type in the integrated search box when using the Google, Yahoo! or Answers.com search engines. A new search engine manager makes it easier to add, remove and re-order search engines, and users will be alerted when Firefox encounters a website that offers new search engines that the user may wish to install.

Improved tabbed browsing: By default, Firefox will open links in new tabs instead of new windows, and each tab will now have a close tab button. Power users who open more tabs than can fit in a single window will see arrows on the left and right side of the tab strip that let them scroll back and forth between their tabs. The History menu will keep a list of recently closed tabs, and a shortcut lets users quickly re-open an accidentally closed tab.

Resuming your browsing session: The Session Restore feature restores windows, tabs, text typed in forms, and in-progress downloads from the last user session. It will be activated automatically when installing an application update or extension, and users will be asked if they want to resume their previous session after a system crash.

Previewing and subscribing to Web feeds: Users can decide how to handle Web feeds (like this one), either subscribing to them via a Web service or in a standalone RSS reader, or adding them as Live Bookmarks. My Yahoo!, Bloglines and Google Reader come pre-loaded as Web service options, but users can add any Web service that handles RSS feeds.

Inline spell checking: A new built-in spell checker enables users to quickly check the spelling of text entered into Web forms (like this one) without having to use a separate application.

Firefox 2 Release notes
Official Mozilla Site