The phrase "audacious announcement" is correct and usable in written English.
It can be used to describe a bold or daring statement or declaration, often one that is surprising or controversial.
Example: "The CEO's audacious announcement about the company's new direction left everyone in the room speechless."
Alternatives: "bold declaration" or "daring statement".
Political plagiarism is the greatest compliment but the chancellor's audacious announcement was greeted by a sullen Labour response that feels halfway between "he doesn't mean it" and "it's not fair, he does mean it".
Yesterday, in full-page newspaper ads, Biztravel.com trumpeted the audacious announcement that travelers who booked tickets through its site on any of five major airlines would receive cash refunds whenever those flights arrived at the gate more than 30 minutes late.
And yet the 1890 US Census did precisely this, with the audacious announcement that the government would no longer tabulate western migration, as the frontier region had ceased to exist.
After giving $100 million to Newark, New Jersey schools, $120 million to Bay Area schools, and 18 million Facebook shares (now worth $1.9 billion) to the Silicon Valley Community Foundation, they made the audacious announcement that they would give away 99% of their Facebook stock during their lifetime, an amount currently valued at $45 billion.
Most audacious was Pyongyang's announcement that it reserves the right of pre-emptive nuclear war against Washington or Seoul.
Without public announcement or debate, the authorities here ordered the reconstruction of one of the most audacious symbols in Baghdad of Mr. Hussein's long, violent and oppressive rule: the Victory Arch, two enormous sets of crossed swords, clutched in hands modeled after his very own.
Tucked inside the E.P.A.'s March announcement of a plan to cut the amount of sulfur allowed in gasoline was an audacious suggestion that sought to solve all three ethanol challenges at once.
