Apple “Newsroom” smells like a blog, but there’s no RSS feed. I assume it uses Apple’s RSS variant and works with Apple’s News.app, but it also renders in a browser. (Historically a dull PR site, Apple is starting to use Newsroom to promote Siri.)
On the other hand, Apple has RSS Feeds. They even have an iTunes Store query tool that generates custom RSS. They don’t have them for newsroom though.
Apple’s half-baked approach to subscription and notification is sadly typical for them.