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?
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?