press release; press announcement
A formal announcement made to the press, often in a press conference or distributed as a written statement. Common in business, government, and computing contexts.
They held a press announcement about the new product.
The content of the press release will probably appear in tomorrow's morning edition.
記者発表 usually means a one-way announcement or press release to journalists, whereas 記者会見 implies an interactive session with a Q&A.
Compound of 記者 (reporter, journalist) and 発表 (announcement, release).