The phrase "announced out of" is correct and usable in written English.
It can be used when indicating the source or reason for an announcement, often in a context where the announcement is made as a result of a specific situation or event.
Example: "The decision was announced out of concern for the community's safety."
Alternatives: "announced due to" or "announced as a result of".
"Message received at 9 37am," the Orange lady announced out of the phone.
Four lineups have so far been announced; out of 20 acts featured, none is a woman.
A mere two years into his six-year contract, he announced out of the blue that he would take his talents to Hong Kong.
But the government suddenly announced, out of the blue that they were pulling the funding for the High Down lab (there were conspiracy theories about deals done, not least because the funding was diverted to develop Concorde).
You see, daylight savings was supposed to begin last night, but there's an election on for today, and the government announced out of nowhere that the spring forward would be put off until tomorrow (presumably to increase confusion).
My spirits lifted when, a week before I was due to leave for Namibia, one of my best mates announced out of the blue that he was quitting his job to spend five months skiing in Canada.
"I haven't had a drink in four days," she'd announce out of nowhere, usually over the phone.
The joke is that this spurs David's mother, Elaine (Ms. Walter), to announce out of the blue that she's leaving Alan and moving to Portugal.
When it came to my turn, Dave jumped in ahead of me, announcing out of the blue that I was going to have a book published.
It is also true that Theo Waigel, the finance minister, has put consensus to a severe test by announcing out of the blue that new spending cuts to be taken from welfare may prove necessary this year to permit Germany to join Europe's single currency.
"It would have been like announcing an out-of-wedlock pregnancy," he said.
