From the folks at Mozilla, the FireFox 1.0 Preview Release is out, and so far,I like what I see. The “live bookmarks” feature can turn your brower into an RSS reader, which is quite handy. Also, when browsing secure sites, the address bar is highlighted in yellow with an additional security icon.
Those are the only changes I’ve noticed from .93, but if you’re still using the featureless, insecure Internet Explorer, I’d recommend changing now.