Incase has posted a preview of its upcoming cases for the iPhone 4. Retooled versions of its Slider Case, Snap Case, and Protective Cover with a topographic design on the rear of the case are all expected by month’s end. Although the company declines to name for certain what cases in what colors it will be offering, the preview shots show pastel colors for the Snap Case, a single pastel blue mixed in with white, black, and gray for the Slider…
