The new Messages beta gives us a peek at one iOS-like feature that'll land in OS X Mountain Lion when it arrives later this year. It also hints that Apple may be planning to refresh its Mac line with high-resolution, retina-like displays. MacRumors dug through the Messages app resources and discovered that some graphics within the app are available in both regular and double resolutions. These images are found in multi-part TIFF files and the double resolution files have a "@2x" designator in their name.
