A company called “Village Instruments” claims to be developing a special ViDock Expansion device for PC & Mac, enabling laptop customers to upgrade their video cards via a Thunderbolt-connected device.

According to the company, a laptop can connect to a large format display (or two), keyboard, and mouse with just one cable. The chassis also features a 2-port USB hub that allows the user to add more devices to the one-step plug-in such as a printer, external hard drive, USB headset, and more.

Uses are a bit limited right now, with only the newest Apple laptops really supporting Thunderbolt.  However, when PC’s come out in 2012 with the new connector this could be an interesting option for folks wanting PC-class graphics on laptops.  You’ll be losing a bit of your portability, but for folks used to Docking Stations & Port Replicators it could be a welcome addition.

via External Thunderbolt Graphics Adapter in the Works.