I note my beta is * mozilla-release - changeset - 193465:529a45c94e5a <br /> https://hg.mozilla.org/releases/mozilla-release/pushloghtml?changeset=529a45c94e5a And I agree on the beta download page and the ftp I see 30.0b9 offered * e.g. http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/latest-beta/win32/en-US/Firefox%20Setup%2030.0b9.exe Someone more knowledgeable may provide you with an answer but the quickest method may be simply to ask on Mozillazine * http://forums.mozillazine.org/viewforum.php?f=23

The Release Candidate build2 of 30.0 is found in http://ftp.mozilla.org/pub/mozilla.org/firefox/candidates/30.0-candidates/ The Firefox 30.0 will be released on June 10 if all goes well.