The most common and most likely answer to this crossword clue is the 9 letter word NEWSFLASH
I've seen this crossword clue in Independent
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More clues leading to the result NEWSFLASH
- Novel with fantastic genre to flog in bulletin
- Breaking: Man in Raincoat opens up to public
- Brief report translated for Welsh fans
- Early indication of what’s breaking distraught Welsh fans
- Story just in Scandinavian folk literature initially remains alongside novel
- Fresh cut’s brought in following urgent announcement
- Novel and literary genre make fast breaking story
- Directions fellow left by tree — and brief update of event?
- Short report of novel, science fiction hit
Buddy explains!

The straight part
We know that "Early indication of what’s breaking" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case early indication of what’s breaking = newsflash.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.
What does NEWSFLASH mean?
NEWSFLASH noun- A brief media report of something that has recently taken place.
- Introduces an obvious fact of which the person addressed is ostensibly not aware.