This is taken straight out of its press release on the changes.
Quote:
New features in Firefox 0.9 include:
* Easy migration: Switching to Firefox has never been easier now that Firefox imports data like Favorites, history, settings, cookies and passwords from Internet Explorer. Firefox can also import settings from Mozilla 1.x, Netscape and Opera.
* Smaller Download: Continuing efforts to make this the most efficient browser, the Windows version of Firefox is now only a 4.7 MB download, making downloading Firefox a breeze for dial-up and broadband users alike.
* New Default Theme: A new default theme provides a bright new look for Windows and Linux users.
* SmartUpdate: A new SmartUpdate feature notifies users of new versions of Firefox to ensure that the browser is always up to date.
* Help: A new online help system makes this one powerful, friendly browser.
* Extension/Theme Manager: New Extension and Theme Managers provide a convenient and secure way to manage and update the hundreds of add-ons that set Firefox apart from other browsers.
Mozilla Firefox also includes numerous bug fixes and incremental improvements, including faster page load speed.
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http://www.mozilla.org/products/firefox/
Download it to test it out
