*Shrugs* I was going to make a thread to introduce Firefox 1.0PR back then but yeah...
I don't use Firefox 1.0PR ,but what I do use is the nightly branch builds of Firefox each day on Linux
http://squarefree.com/burningedge/
I have 16 branch builds ready to go with it's own profile.... sheesh I need to do some house cleaning.
The branch builds since early Oct has a really nice new feature. It one has use "Tab Browser Preferences" extension then that is close to what is in branch builds and soon to be realeased RC1, RC2 and 1.0 release.
The most extensive and often most up to date on extensions can be found at the very popular unofficial
http://www.extensionsmirror.nl/
And if you read this far... The Firefox 1.0 Release is planned for no later then Nov.11 as more info from Ben Goodger can be found at
http://weblogs.mozillazine.org/ben/archives/006658.html
Not set in stone roadmap:
http://www.mozilla.org/projects/firefox/roadmap.html
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20041015 Firefox/0.10