Along with the ability to add multiple layer effects, you can now organize them by rearranging them.
Check out this new feature in Adobe Photoshop CC 2015.
In the Layer Style window you can add multiple Layer Effects and make adjustments to them. Notice in the image above, there are multiple strokes and multiple gradient overlays.
At the bottom of the column you can use the up and down arrows to move the effect. You can not mix effects. You can only move effects within themselves.
You can also make these changes directly in the Layers Panel.
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