"Firefox 9" official version appears, JavaScript processing dramatically improved up to 30% faster

November 9th"Firefox 8" official version appearedFrom 6 weeks passed, the official version of "Firefox 9" was released on schedule. This timeFirefox 9 is up to 45% faster than Firefox 8, up to 10 times faster than Firefox 3.6Javascript's performance has been dramatically improved as it was said, so you can quickly browse sites that were heavily processed. Also, the Android version has been optimized for the tablet terminal interface.

Mozilla Japan blog

Firefox 9 Release Notes
http://mozilla.jp/firefox/9.0/releasenotes/

The improvement points of this time are as follows.

We added type inference and dramatically improved the performance of JavaScript.
Improve theme integration with Mac OS X Lion.
I added two-finger swipe navigation with Mac OS X Lion.
It is now possible to check Do Not Track setting via JavaScript.
It corresponds to CSS font-stretch property.
Improve correspondence of CSS text-overflow property.
We improved the standard correspondence of HTML 5, MathML, CSS etc.
Fixed some stability issues.
We fixed some security issues.

Improvement in JavaScript processing looks something like this, and several tests have proven that speed has increased by 15% to 30%.


Also, the Android version of Firefox as seen on the tablet terminal was optimized like this.

Firefox for Android on tablets - YouTube


Updating is done semi-automatically. Click "Confirm Software Update" in Firefox ......


7.2 MB files will be downloaded.


Click "Apply Downloaded Updates"


Some add-ons may not be compatible with the new version. Click "Check Now".


There was no update of the add-on. Click "Finish".


Firefox has evolved to 9.


The contract with Google, which has supported most of the revenue of the Mozilla Foundation, has expired at the end of November, and negotiations continued, but agreement was reached with the extension of contract for three years without fail.

Mozilla and Google Sign New Agreement for Default Search in Firefox | The Mozilla Blog

Next time Firefox 10 will be released on January 31, 2012 local time. In Firefox version 5 or later, we have implemented a rapid release that performs major version upgrade in a short cycle, but because it is a burden for corporate users, Firefox 10 proposed the extension support release version (ESR version) It is. This ESR version is only minor version upgrades that do not make functional changes by only fixing security and security concerns, and as for entrepreneur users, Firefox 10 and later will have the option of using the ESR version. By the way, ESR version for Android is not released.