Earlier quoted context omitted.
Pixelmator as a product is literally what Apple would have built anyway if they made an attempt. The difference here is how aligned the original team is with their acquirer...down to the corner radius on every button. With other products like Dark Sky, the product is substantially different in philosophy or design.
The main worry is that it will be an acquihire into the Photos app and Apple doesn’t actually want to have a separate image editor (let alone two). They used to have Aperture competing with Lightroom and then decided pro photography wasn’t a space they needed to be in, has something changed where now they want their own Photoshop competitor?
There doesn't appear to be much overlap in terms of functionality.
Hell, if this is true I'd actively celebrate it.