After three years' reign, the orange Firefox button has been retired by Mozilla. Firefox 29 introduces the new Australis interface, with its curved tabs and a simple menu button comprised of three horizontal lines (the "Hamburger Icon"). The interface missed its targets a few times but is finally here.
Obviously, Australis makes the browser look more like Google Chrome (and less like Opera). Users of Mozilla's Thunderbird will also find it more familiar as that program skipped Firefox 4's direction and immediately adopted parts of Australis as they developed. Thunderbird still lacks a few bits and pieces, its development having slowed since its transition to Extended Support. But this is not about Thunderbird — it is about Firefox.
In terms of actual features, Australis brings a new Bookmarks button, which is basically two buttons, and is pretty slick to both add and access links to favorite web addresses. The little star-dropping animation is a subtle hint to the user that a bookmark has been added to the list, accessed by the right-most button. Many users will be upset by the removal of the Add-on Bar, a place where extensions can leave a button or two without clogging the rest of the interface. Mozilla seems to expect that extensions, if they absolutely must leave a button, will cram it next to the gigantic location bar (or less-gigantic search bar); that, or affected users will just install an Add-on Bar extension.
Also in Firefox 29 is the finalized, and enabled by default, Gamepad API. With it, web games can be controlled with devices such as the Xbox 360 controller. If you want to see a geeky example, one is available at html5gamepad.com. This website lists every compatible game input device and their current state. In my testing, Firefox 29 was able to detect both my Xbox 360 controller and my Thrustmaster T-16000M joystick — and register their inputs independently.
There's not really anything, from the technical side of things at least, to prevent split-screen gaming in the browser. Detecting the input devices did not even require restarting the browser, although that is a good troubleshooting step, as Firefox detected it immediately after I plugged it in and pressed a button. The flight stick, probably because it has never been attached to this instance of Windows before, required the good old unplug and replug of its USB cord after Windows "Add New Hardware" finished in order to register input. It is not perfect, but still pretty good.
Firefox 29 launched in the middle of the night on Tuesday, April 29th. It is free and, if Firefox is set to automatically update, you probably already have it. If not? Get it.