Announcement/event of September 2011, or what happened to the theme answers

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Similar Crossword Questions:

How the other theme answers created this one?
Agent "embedded" in this puzzle's theme answers
September event
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Proper sort ... or a cry upon solving each of this puzzle's theme answers?
Like the three marriages described in the theme answers
Write in any of this puzzle's eight theme answers?
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Struck out, as one letter in each of this puzzle's theme answers