Quark has posted QuarkXPress 9.1, an update to the company's flagship publishing suite. The main addition is the App Studio, used to produce iPad publications and publish them to the App Store. The process begins with a new layout space inside QuarkXPress, which supports vertical and horizontal iPad orientations, and adding audio, images, slideshows and video. To actually produce the apps requires App Studio Factory, a bundled Mac-only program. Completing the workflow are the App Studio Issue Previewer and the App Studio Publishing Portal.