The Mozilla Project has posted the first preview release
of Firefox 1.0,
the open source web browser that has recently crossed 10% market share
and is rapidly gaining on
Internet Explorer. They've also upgraded Mozilla to 1.7.3 to fix some security bugs. Both Firefox and Mozilla support XML, XSLT, HTML, XHTML, CSS, and XSLT.
New features in this release include RSS support. This release may break some extensions.