When Star Trek - Season Three is released on Blu-ray on December 15th, one of the bonus features will be a rare alternate version of the second pilot episode, "Where No Man Has Gone Before," which aired as the third episode of the first season on September 22nd, 1966. This has been confirmed by The Digital Bits. The early edit includes "acts" displayed on screen along the lines of Quinn Martin's various programs.
Star Trek, Where No Man Has Gone Before - Alternate Version
It also features a different opening voiceover from William Shatner and different opening and closing themes:
Enterprise log, Captain James Kirk commanding. We are leaving that vast cloud of stars and planets which we call our galaxy. Behind us Earth, Mars, Venus, even our sun are specks of dust. The question: what is out there in the black void beyond? Until now our mission has been that of space law regulation, contact with Earth colonies and investigation of alien life. But now, a new task. A probe out into where no man has gone before.
The pilot also includes a few alternate lines of dialogue. It has never been commercially released but has been circulating in collectors circuits for years. It runs three or four minutes longer than the broadcast version. There will be three versions of the episode in the set: the original broadcast version, the recent "remastered version" and the unaired, alternate version.
If only I had a Blu-ray player!