Multiple credible financial news outlets and data providers indicate that Berkshire Hathaway recently released or was referenced in an updated investment portfolio via its SEC 13F filing. Reports from authoritative and relevant sources detail changes in holdings such as reductions in Apple and Bank of America stakes, which are characteristic of official portfolio updates. The CNBC article explicitly covers comments from Berkshire's CEO alongside mention of the recent 13F filing, which constitutes an official disclosure of investment portfolio changes. Barron's also discusses potential portfolio adjustments in anticipation of or following SEC filings, reinforcing the existence of such an announcement. The Yahoo Finance profile page, which aggregates official filings and press releases, further supports the likelihood of a formal update. Although some sources are more interpretive or indirect, the convergence of credible reporting and explicit references to formal 13F filings strongly supports the conclusion that Berkshire Hathaway has indeed announced or disclosed an update to its investment portfolio.