Mozilla Software → [Mozilla] Firefox 21 beta available

Firefox 21
First offered to Beta channel users on April 4, 2013

What’s New

NEW - Enhanced three-state UI for Do Not Track (DNT)
NEW - Firefox will suggest how to improve your application startup time if needed
NEW - Preliminary implementation of Firefox Health Report (see FAQ)

CHANGED -Ability to Restore removed thumbnails on New tab Page
CHANGED - Add-ons History API removals in Places
CHANGED - CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none (bugs 816298)
CHANGED - Graphics related performance improvements (bugs 809821)
CHANGED - Removed E4X support from SpiderMonkey

DEVELOPER - Implemented Remote Profiling
DEVELOPER - Integrated, Add-on SDK loader and API libraries into Firefox

HTML5 - Added support for element
HTML5 - Implemented scoped stylesheets

FIXED - Some function keys may not work when pressed (833719)
FIXED - Browsing and Download history clearing needs unification to avoid confusion on clearing download history (847627)

See the release notes for more information and Known Issues.
»www.mozilla.org/en-US/fi ··· senotes/

Desktop - download all systems & languages:
»www.mozilla.org/en-US/fi ··· eta.html

Mobile: »www.mozilla.org/en-US/mo ··· senotes/

What is Firefox Health Report?

Firefox Health Report (FHR) is an upcoming Firefox feature that enables users to optimize their Firefox configuration and will help us build a more excellent browser. As a non-profit dedicated to making the Web better, Mozilla will use FHR to help us improve performance, fix problems and let users see how their browsing experience compares against other instances of Firefox. FHR will also provide the Mozilla Project a source of open data for improving and prioritizing development.

FHR will collect a series of technical indicators about the Firefox browser and periodically send this data to Mozilla. This information includes stability and performance information about the browser and its environment. Users will be able to disable FHR or delete data associated with their browser at any time.

FHR will power a dashboard built into Firefox for users to visualize how their browser performs in comparison to other browser configurations and what they can do to improve its performance. For example, they can see whether a performance problem is unique to their installation or related to a particular add-on, and whether upgrading to the next
version is likely to solve their problem.

Along with the telemetry in the other thread...more stuff we have to turn off. Opt-in not Opt-out by default Mozilla.

The telemetry is off by default and telemetry has been around since Firefox 7.

The part you left our from your cut and paste from the link provided above in chachazz 's post:

said by "FAQ for FHR | Blog of Metrics" :

---

When will Firefox Health Report (FHR) be rolled out and how will users be notified?

We intend to include FHR in an upcoming Nightly build soon. When it appears, users will get an explanation of what it does and will have the option to disable it. We’ll evaluate and adjust FHR on Nightly before moving it through our broader release channels.

Our Nightly channel is considered our platform for developers and Mozilla contributors to try out very early features of Firefox and provide us with feedback, before we move them to our Aurora, Beta and then

---

That basic information post (FAQ) by Mozilla is quite old.
It's moved from Nightly to Aurora to Beta...

Here is some further information - »FYI: More on Firefox 'Health Report'.

Real detailed info, like "What the Firefox Health Report Measures" - @ Mozilla Services.

Note: the data is accessed via Help menu - or type "about:healthreport" in location bar.

Note: If you have just installed Firefox, the information in the Health Report may not be accurate. It typically takes 14 days of browser use to see any trends.

FHR, according to Mozilla
»blog.mozilla.org/metrics ··· -report/

FHR according to Mitchell Baker

quote:

---

It will use data in a privacy-centric way.

Weve designed Firefox Health Report to treat people well and to start the process of putting us back in control of the data that shapes our online experience. Weve designed it to provide useful information to you about your experience. For example: is a particular add-on causing performance to degrade? Will starting a new Firefox profile help improve performance?

Second, weve designed the Firefox Health Report to not gather personal information. This will allow Mozilla to develop aggregate data in a privacy-sensitive way. You can see all the details about how weve done this here.

Third, we will also make it easy for people to disable this feature. This may be an excess of caution for many users. However, we know that there are some people who prefer a world of no data, even if it means less understanding of personal circumstances. We want this group to be comfortable as well, and so we will make the process for disabling this feature clear and conspicuous.

---

Mozilla Support: Firefox Health Report - understand your browser performance
»support.mozilla.org/en-U ··· r=0&as=s

Thanks chachazz. I may give it test run once it comes out on the default channel.

Or the next stable build, whichever comes first

We will see stable channel 20.0.1 soon -
Bug 857672 - "Seems to be related to roaming profiles on Win Server environments".

Thanks

Beta 2 - just came in via internal update!

Also available for download now: »www.mozilla.org/en-US/fi ··· eta.html

Any major problems using this Beta as primary browser?

21 Beta 3 is now at all of the software sites.

Major Geeks is one...

»www.majorgeeks.com/Mozil ··· 191.html

Beta News is another...

»fileforum.betanews.com/d ··· 985422/4

Beta is quite stable.

Builds were available yesterday on the mozilla releases server.
Waiting for internal update - after all, these are test builds!

I have never encountered a changed file after it hits the release server and been made available at the reputable sites I have mentioned.

Beta 3 by internal updater:

...and Beta 3 installer is available for download.

21 beta 4 is around at the usual "day before" places.....

»fileforum.betanews.com/d ··· 985422/4

»www.downloadcrew.com/art ··· fox_beta

»www.majorgeeks.com/Mozil ··· 191.html

Hasn't updated via internal updater yet.

For those who can't wait, get it from Mozilla release server.

Beta 5 is now available.

»www.majorgeeks.com/Mozil ··· 191.html

»fileforum.betanews.com/d ··· 985422/4

»www.downloadcrew.com/art ··· fox_beta

I see that the official http site never even had beta 4 on it and it is still hosting beta 3 as I type this.

The official http download site is still hosting beta 3 and this is 3 days after beta 5 appeared in the releases directory. Beta 4 never made it to the http site.

21 Beta 6 was spotted in the releases directory and now is hitting the software sites. The http site still is hosting Beta 3.

»www.majorgeeks.com/Mozil ··· 191.html

.

The http download site now has 21.0 beta 6.

»www.mozilla.org/en-US/fi ··· eta.html

21.0 beta 7 is out at the software sites posted elsewhere in this thread.

Nice I love some of the new changes. Can't wait until Firefox 21 final!

The final should be out very soon. Once these versions go to beta 6 or 7, the final is next. I am running 20.0.1 on this pc and continuing along the beta trail on my laptop.