No, but they also can't release an announcement that isn't...

No, but they also can't release an announcement that isn't correct, so they are allowed time to digest the results, write an announcement, check it with legal, and have it signed-off internally.
In addition, they don't just sit around and wait for the results, they get to see preliminary drafts so they can comment and clarify.
So, there would be a lot of wriggle room in arguing "did you release it to the market in a timely manner?"