A press release, news release, media release, press statement or video release is a written or recorded communication directed at members of the news media for the purpose of announcing something ostensibly newsworthy. Typically, they are mailed,
Technically, anything deliberately sent to a reporter or media source is considered a press release: it is information released by the act of being sent to the media. However, public relations professionals often follow a standard format that they believe is efficient and increases their odds of getting the publicity they desire. The format is supposed to help journalists separate press releases from other PR communication methods, such as pitch letters or media advisories. Generally, a PR body consists of 4 to 5 paragraphs with word limit ranging from 400 to 500.  However, press releases can be anywhere from 300 to 800 words 
As the internet has gained prevalence the way journalists like to be approached has also changed. A format suggested by Kristen Nicole, a former
"I’d recommend pitching the writer first, with an angle specific to their beat. If a case needs to be made to the editor, it can fare better coming from the writer, who’s already had an opportunity to work out an angle with the PR rep. As an editor, I’m more likely to prioritize emails coming from those I have personal relationships with. These have been built over the years from the days when I was the writer presenting to my editors. Starting a new relationship with me as an editor, the most successful pitches have been those offering high profile interviews (editors that still write columns will want to take these for themselves before passing them off to junior writers) or highly specific content, like an original guest contribution." 
Some of these common structural elements include:
As the Internet has assumed growing prominence in the news cycle, press release writing styles have necessarily evolved.  Editors of online newsletters, for instance, often lack the staff to convert traditional press release prose into more readable, print-ready copy.