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. MacRumors uses this as evidence that Apple is "already building in support for Retina displays on the Mac."
This isn't the first time we've heard about a retina-like Mac display. The first mention of such a monitor came from Digitimes, which misses on its rumors more than it hits. We also had a rumor last week from AppleInsider that suggests Apple may overhaul its MacBook lineup.
Though AppleInsider didn't specifically mention screen hardware, you have to admit that a high-resolution display would make for an excellent update. I'm not saying Apple will definitely bump up the specs on its Mac displays, but the evidence is beginning to point in that direction.