This came out a while ago, after a long period without a release. Reproducible: Always
It seems it's still a release candidate.
@comment #1 This bug should likely specify 1.8.0. 1.8.1, aka tracemonkey is a different branch. 1.8.0 should have been a 1.7.x release, but wasn't. Hope that clears up the confusion.
I just spoke to some mozilla devs which told me that a formal release will be out in september. Now we wait?
Relevant Mozilla bugs: https://bugzilla.mozilla.org/show_bug.cgi?id=428420 https://bugzilla.mozilla.org/show_bug.cgi?id=479473
*** This bug has been marked as a duplicate of bug 347914 ***