A Dev Diary has been posted by Todd DeMelle, DDO Art Director at Ten Ton Hammer explaining the process and considerations of making a dragon, including some nice concept art. Here's a clip:
While the world of Eberron® was chosen as the backdrop for DUNGEONS & DRAGONS ONLINE™: Stormreach™ (DDO) in part because its relative newness allows so much creative freedom, the campaign setting’s roots still lie in the traditional Dungeons and Dragons® core. Many of us on the Turbine dev team have long histories exploring that core and a great appreciation and reverence for it. As an opportunity to pay homage, the responsibility for bringing the dragons to life again in this new setting has been an honor and a privilege.
When reviewing the Black Dragon encounter in Module 4, entering the chamber and watching her rise up from her horde to descend upon the invading party, I was struck with the satisfying realization that we had achieved something quintessentially core Dungeons & Dragons. Flashes of the excitement I imagined looking at the cover of the basic rule set back in the early 80’s came back to me. The red dragon poised over her horde.
You'll find the rest
over at Ten Ton Hammer.