Nope, they're just misinformed; they read the roadmap incorrectly. What the Firefox devs mean is a 64-bit version of Firefox (i.e. an x64 process). Right now Firefox runs perfectly on both Windows 7 and 64-bit versions of Windows.
The usual proviso apply of course: these are nightly builds and come with no guarentees, nor should they be used as an indication of the quality of the release going forwards.
Can you please provide a link to that, I'd like to test/use it.
There are 64-bit nightly builds of FF4, but _only_ nightlies: http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/lates...
This suggests that there won't be an official 64-bit build of Firefox 4 -- we'll have to wait for Firefox 5.
As some people comment below me, only some parts of it are working in the 64-bit space (and most notably, the Flash 64-bit plug-in is still beta/alpha.)
I've been using Chrome / Chromium exclusively since its release, primarily due to the simple, uncluttered UI and blazing speed. It was a breath of fresh air, and I switched readily.
But something changed with the recent Firefox 4 betas. The browser feels fast, again, and the UI seems more reasonable. I find Panorama useful. And slowly, Firefox is winning me back. In time, I think it may win back other developers, too. And if it does, I could easily see a fairly stable equilibrium developing between the two browsers.
Firefox needed the competition from Chrome, and in many ways, it's starting to meet that challenge.
You're kidding, right? Do they REALLY not support the fastest growing OS version + platform combo?
OEMs are finally paying attention to 64-bit computing, and Windows 7 has been replacing Vista like wildfire.... and FF is still two releases away from official Windows 7 64-bit support?
EDIT:
Oops. Seems stupid Aol/Weblogs/Switched/DowloadSquad (I don't even know what it's called any more!) didn't bother to fact-check, and they're referring to 64-bit native builds of Firefox.
EDIT2:
So I'm really being downvoted because the original story got it wrong? I guess that's one way to take out your anger on inaccurate writeups...