The phrase "announced preparation" is correct and usable in written English.
It can be used when referring to the act of making known or publicizing the readiness or planning for an event or task.
Example: "The announced preparation for the upcoming conference has generated a lot of excitement among the participants."
Alternatives: "declared readiness" or "publicized planning".
Clinton's announced preparation for the upcoming debate was actually an excuse for the Democratic nominee to rest, added Trump, who then shook his head as he said incredulously, "Debate prep?" But the nearly hourlong gathering with voters in Sandown, N.H., moderated by conservative radio host Howie Carr, sure felt like a practice session for Sunday's debate, which begins at 6 p.m. Pacific.
A Gaza seaport got the nod from Israel this week the PA announced preparations for a tender for building it.
On 2 April 1942, Boris Zagorsky and Yasha Babushkin of the Leningrad city arts department announced preparations for the symphony's performance.
This is the first work announcing preparation of PVA PEG membrane using supercritical CO2.
The Forerunner 405CX was announced in preparation for world-class marathons in Paris and Boston, where it will be on display at Garmin booths in each location.
Forerunner 610 was announced in preparation for world-class marathons in Boston and London as well as the Australian fitness expo where it will be prominently displayed at Garmin booths in each location.
Boasting up to 20 hours of battery life and a sleek, comfortable design, the Forerunner 310XT was announced in preparation for world-class marathons in Paris and Boston, where it will be on display at Garmin booths in each location.
In August 2007, Fredy Lienhard and Didier Theys announced their preparation of a former FIA GT MC12 for use in the American Le Mans Series.
In 1995, M. Räsänen and co-workers, scientists at the University of Helsinki in Finland, announced the preparation of xenon dihydride (HXeH), and later xenon hydride-hydroxide (HXeOH), hydroxenoacetylene (HXeCCH), and other Xe-containing molecules.
In October 2012, the Ministry of Health surprisingly announced a preparation of mental health reform based on the community mental health centres serving population of 100 000 inhabitants.
Governors all along the coast announced emergency preparations.
