Apple has released Safari 10.0.1 for OS X 10.10.5 Yosemite and 10.11.6 El Capitan (macOS 10.12.1 Sierra also includes it) with a couple of security patches for WebKit. The update eliminates multiple memory corruption issues that could allow arbitrary code execution and an input validation issue that could result in the disclosure of user information — both occurring after processing maliciously crafted Web content. The release also addresses a number of unspecified bug fixes. Safari 10.0.1 is available only via Software Update. (Free, release notes, 10.10+)
I believe this should say "released yesterday..." It wasn't today, as implied by your article.