It’s noted on the Search Engine Roundtable blog that Google News is now re-indexing and crawling news sources for the latest version, provided updates are posted within a ‘short period of time’.
In the past, once a story was published and Google News indexed it, Google News would keep the item as it was, even if changes were then made by the publisher.
Users in the Google News Help forum discuss the issue here. Google employee Inbal Drukker said:
“We now do have the ability to re-crawl your articles to make sure we have the latest version displayed on our site if these updates are published within a short period of time.”