Sony just developed 3D TVs and they're going to update the PS3 to be able to support 3D gaming. You'll need to wear 3D glasses. They're developing 3D TVs that you wont need the glasses for, but the prototype is around $20,000. So those will probably be a ways off. Maybe in about 5-6 years?

I don't know if MS will do it for the Xbox or not? Possibly.

El_PS3_Best

Just developed?? My 3 year old Samsung is 3D ready.