No, the foundation didn't make an announcement. They filed a obligatory report with the IRS, as any legitimate foundation does, and that report to the IRS becomes public information. The media looked it up, and put their leftist spin on it.
I stand corrected, it was a report from Guidestar.
"The admission was contained in the Donald J. Trump Foundation’s IRS tax filings for 2015, which were recently posted online at the nonprofit-tracking site GuideStar. A GuideStar spokesman said the forms were uploaded by the Trump Foundation’s law firm, Morgan, Lewis & Bockius."
"For 2015, the Trump Foundation checked “yes” when asked whether it had transferred “income or assets to a disqualified person” — which in this context might be Trump, a member of his family or a Trump-owned business — and checked “yes” again when asked if it had engaged in any acts of self-dealing in prior years. For 2014, The foundation answered “no” to these questions."