During SID, the Fraunhofer IPMS unveiled their bi-directional OLED microdisplay evaluation kit - which comes with a demo unit and software API so you can design your own application. The HMD is see-through and features eye-tracking, all of this from a single OLED device. The kit costs around €11,000 euro (almost $14,000).
The application they were demonstrating at SID showed a map of the world. If you looked in some directions, the map moved. I couldn't actually get this to work myself... but apparently this system works great for others, as they won the Best of Show at SID.
The OLED microdisplay itself features a monochrome VGA resolution, and like I said it's bi-directional. The idea is that they put a photodiode between the OLED pixels, which is used for eye-tracking. You can read more about the technology here. One of the nasty side-effects of the Fraunhofer technology is that you can see the red "glow" when looking at someone using the glasses, it's a bit scary...
During SID, the Fraunhofer's COMEDD center also announced that they will cooperate with the manufactory MEISSEN (a supplier of high-end interiors) in the field of innovative porcelain luminaires. They will show the first luminares that use the Fraunhofer's TABOLA OLED lighting panels as soon as April 2013.