![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-2.png)
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-2.png)
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-2.png)
Firefox 43 beta3 to beta4
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-1.png)
Firefox 43 beta2 to beta3
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-2.png)
Firefox 43 beta1 to beta2
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-6.png)
Firefox 42 rc1 to rc2
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-2.png)
Firefox 42 beta9 to rc1
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-4.png)
Firefox 42 beta8 to beta9
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-4.png)
Firefox 42 beta7 to beta8
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-5.png)
Firefox 42 beta6 to beta7
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-3.png)
Firefox 39 beta5 to beta6
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-1.png)
Firefox 39 beta4 to beta5
![](https://blog.nightly.mozilla.org/wp-content/themes/frontierline/img/fallbacks/pattern-2.png)