After only a few games using it very light, and someone game using it as a gimmick, the real time tessellation is starting to take off.
Some tests reveals that nVidia are seriously pushing the real time tessellation so 2012 appears the year of when we will see his initially spread use, bringing us a incredible detail in models finally.
Here is a amazing video showing the real time tessellation possibilities in-game models, seriously detailed space ships and asteroids in this Eve Online demo, worth to see :