The most common and most likely answer to this crossword clue is the 12 letter word DECLARATIONS
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More clues leading to the result DECLARATIONS
Buddy explains!

The straight part
We know that "announcements" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case announcements = declarations.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
Crossword Answer definitions
DECLARATIONS noun- A written or oral indication of a fact, opinion, or belief.
- A list of items for various legal purposes, e.g. customs declaration.
- The act or process of declaring.
- The act, by the captain of a batting side, of declaring an innings closed.
- In common law, the formal document specifying plaintiff's cause of action, including the facts necessary to sustain a proper cause of action, and to advise the defendant of the grounds upon which he is being sued.
- The specification of an object, such as a variable or function, establishing its existence but not necessarily describing its contents.