The new update to Pixelmator Pro acts as a massive upgrade to the Apple Photos app. With the updated Photos extension, you can can access all of the tools and features from the full application, including layers and machine-learning tools. You can also save Pixelmator Pro documents to Photos. The update has additional features (e.g., new zoom tool, improved crop tool, and a delete mode), but the story here is that Apple Photos + Pixelmator Pro just became a potent photo editing solution.