In v20.0.0, changing fonts rapidly would crash the application.
: A small but life-saving update allows you to perform basic arithmetic directly in any numerical input field (e.g., typing "500/3" in the width field). Key Workflow Improvements adobe photoshop cc 2019 20.0.1.17836
: A new way to mask images by placing them into shapes. You can draw a placeholder rectangle or ellipse, then drag and drop an image into it; the image automatically scales to fit. In v20
The most controversial change in the 2019 release (v20.0) was the complete overhaul of keyboard shortcuts. If you updated from 2018 to this version, you were likely confused. You can draw a placeholder rectangle or ellipse,
: Instead of clicking through each blend mode to see what it does, you can now simply hover over the options in the Layers panel to see a live preview on your canvas.