It occurs to me that stoking up the level of angst and anticipation to that shown hereabouts of late for a software release, then anonymously releasing a plausible "leaked" version, complete with backdoors, keyloggers, bots, whatever, would be a pretty effective social engineering attack. I'm not suggesting this has happened here, but it's not implausible in the general case.

Practice safe hex; don't dl from unknown sources...