In the Spock-to-Spock chat, we learn that he has told Starfleet of Khan, and where to find him; it follows that he would tell of the Space Amoeba and the rest as well.
This didn't happen in the movie, and therefore isn't "canon." Are you talking about the novelization? Even if the latter is the source, it makes no sense based on Spock's statement that he would never divulge his knowledge to influence destiny in the new continuity.
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