I can't check the latest news from here, so I can't confirm the details of this specific order. The wording you quote, about mitigating blackout risks ahead of a period of elevated demand, is typical of emergency orders the U.S. Department of Energy issues under section 202(c) of the Federal Power Act. That section lets the Secretary of Energy direct grid operators to keep generating units running, or to dispatch power in particular ways, when a reliability emergency is expected. Such orders usually name the affected grid operator or plant, state the period they cover, and give the reason, often a forecast of peak demand or a shortage of generating capacity. They are also often renewed in short increments, and the renewals are where the changes show up.
To check the order itself, look for the Department of Energy's posted order text, which should state its legal authority, dates, the facilities or regions covered, and the reliability findings. Those findings are the primary source for what the government actually said. If you can paste the order's text or its key paragraphs here, I can walk through what it says, what it requires, and how long it lasts. Has anyone seen the order text or the grid operator's notice on it?