Firefox 3 Beta 4 now available for download

[Mike Beltzner]

* follow-up to: mozilla.dev.planning
* or, reply-to: dev-planning at lists.mozilla.org

Please note: We do not recommend that anyone other than developers and 
testers download the Firefox 3 Beta 4 milestone release. It is intended 
for testing purposes only.

Firefox 3 Beta 4 is now available for download. This is the twelfth 
developer milestone focused on testing the core functionality provided 
by many new features and changes to the platform scheduled for Firefox 
3. Ongoing planning for Firefox 3 can be followed at the Firefox 3 
Planning Center, as well as in mozilla.dev.planning and on 
irc.mozilla.org in #granparadiso.

New features and changes in this milestone that require feedback include:

     * Improvements to the user interface: better search support in the 
Download Manager, ability to zoom entire page or just the text, 
continuing look and feel improvements on Windows Vista, Windows XP, Mac 
OS X and Linux.

     * Richer personalization through: location bar that uses an 
algorithm based on site visit recency and frequency (called "frecency") 
to provide better matches against your history and bookmarks for URLs 
and page titles, as well as an adaptive learning algorithm which tunes 
itself to your browsing habits.

     * Improved platform features such as: support for HTML5's 
window.postMessage and window.messageEvent, JavaScript 1.8 improvements, 
and offline data storage for web applications.

     * Performance improvements: changes to our JavaScript engine as 
well as profile guided optimization resulted in significant gains over 
previous releases in the popular SunSpider test from Apple, web 
applications like Google Mail and Zoho Office run much faster, and 
continued improvements to memory usage drastically reduce the amount of 
memory consumed over long web browsing sessions.

You can find out more about all of these features in the "What's New" 
section of the release notes: 
http://www.mozilla.com/firefox/3.0b4/releasenotes

Testers can download Firefox 3 Beta 4 builds for Windows, Mac OS X and 
Linux in over 30 different languages: 
http://www.mozilla.com/firefox/all-beta.html

---------
Note: Please do not link directly to the download site. Instead we 
strongly encourage you to link to this Firefox 3 Beta 4 milestone at: 
http://developer.mozilla.org/devnews/index.php/2008/03/10/firefox-3-beta-4-now-available-for-download
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