As noted by The Next Web, at least one developer has updated its Mac App Store app to include high-resolution “Retina graphics” for the new lineup of Retina display Macs that we revealed last month (here and here).

The Mac App Store app is Folderwatch. It was updated today with several new features, one of which is “Retina graphics.” We are not ready to speculate that the developers know something we do not, but Apple obviously allowed the update. It is likely we will begin to see Mac Apps updated with high-resolution artwork leading up to Apple’s introduction of Retina Macs at the Worldwide Developers Conference next week.

Some have pointed to the unusually high number of to-be-announced sessions on the WWDC schedule as proof of the introduction of a new app platform, but we noted that many of these sessions could relate to Retina Mac apps.

As we explained in our reveal of Apple’s new ultra-slim, 15-inch MacBook Pro, sources indicated that Apple’s new Retina Macs would include multiple resolution modes allowing users to “adjust the sharpness and image sizes to their liking”:

Apple’s is slated to kick off WWDC with its keynote at 10 a.m. PST on June 11.

Update: As noted by a commenter, the developer had this to say: