LetterMPress is a virtual letterpress app for the iPad—at least that’s the idea. The project is using Kickstarter to raise funds to complete the app and to acquire wood type fonts to include (virtually) in the app. More info on Kickstarter.
I think it’s a neat idea. Not only will you be able to make compositions on a virtual press bed with virtual wood type, mix and apply virtual ink, and make virtual prints, if all goes according to plan, you will be able to send them your design and have it all done for real, with real wood type, ink, and paper.
Some letterpress purists may scoff, but I think it has the potential to introduce the joys of letterpress printing to a much wider audience.