Curiously, since it has been a while, I launched Firefox on two different computers today to install the update. Going to Help > About Firefox, neither version even provided the link to check for updates, both reporting that Firefox is up to date. Problem is, neither version is up to date. Both are at 36.0.1 and there were two security updates from the pwn2own contest.
Edit Note: I edited the first post in this thread to point to post #2 about the security updates.