In the Macworld article:
“The Photos app, previewed at the 2014 Worldwide Developers Conference, will become the company’s main photographic focus for both professionals and consumers. As it grows, Apple intends the single app to serve the needs of both consumers and professionals. (That will be an interesting challenge; it will be intriguing to see how Apple puts all of its photographic eggs in a single basket.)”
So there’s the “as it grows” caveat.