This is one of those "why didn't someone think of this before?" type of products. Mark Wilson of Fast Company got to try zSpace, a new design tablet with a 3D display and head-tracking technology. zSpace tracks both the 3D glasses and a stylus with IR cameras to adjust the perspective of 3D models as users move their head, giving the illusion of an interactive holographic image. Theoretically, artists would be able to view and tweak 3D models like Tony Stark in the Iron Man movies. Here's zSpace's promotional video explaining how the tablet works:
Read Mark Wilson's hands-on preview of zSpace here. The product is available for purchase right now.