One reason the CIA doesn't release information that has since become public, is because the techniques used to acquire that information are still classified. S

One reason the CIA doesn't release information that has since become public, is because the techniques used to acquire that information are still classified. Source: "The Langley Files: A CIA Podcast" (Yes, the CIA has a podcast) https://www.cia.gov/stories/story/the-langley-files/ https://www.cia.gov/stories/story/the-langley-files/