It might not be dedicated servers, however it seems that Infinity Ward plans to release mod tools for its smash hit Call of Duty: Modern Warfare 2 sometime soon.
IW creative strategist Robert Bowling hinted at MW2 modding via Twitter in response to a gamer’s question regarding (what else?) dedicating servers, saying, “there may be some Mod Tools news coming in the future, I'll pass it along once I have it.”
It would just be mean to mention mod tools if IW didn’t actually have plans to make them available, so this looks like a classic waiting game scenario. Yippee.