There are Solaris contributed builds, for beta 5 go to http://releases.mozilla.org/pub/mozilla.org/firefox/releases/4.0b5/contrib/

Ok, it looks like there will not be a release 4 for Solaris, but there will be this contributed build for Solaris, for the future beta 5 right?

My next question, if that is true, then do you have an anticipated release date for a new version 5 (not beta)?

Thanks, Jerome

The page I linked to above is for the latest beta version of Firefox 4 (Firefox 4 beta 5).

There has not been a date set for the release of Firefox 4, but it could be the end of this year or early next year.