Adobe has today released an updated Photoshop CC that features custom support for Apple's Touch Bar on the MacBook Pro. The update includes three distinct categories of functions for Touch Bar: Layer Properties, Brushes, and customizable Favorites.
Inside the Layer Properties section, you can quickly access common actions like place a Smart Object, clip Layers, and open Select & Mask. Controls for changing the blend mode and scrubbing through the history are especially nice to use on the Touch Bar Retina display because of a visual preview of the result.
The Brushes section gives you quick access to brush color, size, hardness, opacity and flow. Each of these commands has a movable slider to pick just the right value.
The Favorites sections allows you to configure your own set of favorite actions. This includes any combination of actions from the previous sections, or other commands like Full screen mode, Flip Horizontal/Vertical, and launching the macOS share menu.