You can thank Cushman and his ilk for this stuff not being released, as people taking and using stuff from Star Trek History without asking made them very reticent to release more material. I can't blame them.I've seen that part 2 video is now online (actually it has been for almost a week).
Very interesting and well done, again.
Actually I was hoping to see some of the Memory Wall footage retrieved by startrekhistory.com, as the antibodies attack is explicity mentioned as one of the failure of the entire sequence, but there are only pictures (already available). It’s a pity.