DL CADE, DPREVIEW:
The tool—which will be added to "an upcoming release of Photoshop CC" according to Photoshop Product Manager Meredith Payne Stotzner—is very simple to use. It works by creating curved lines between points in your selection as you create a path. Each click adds a new point, clicking a point twice turns it into a sharp corner, and once your path is complete you can add, move and toggle points between rounded and sharp edges without ever changing to another tool.
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