They will never shut down their previous cod servers.
Call of Duty 4 is still a top selling game and Infinity Ward is one of the greediest company's I have ever come across. Call of Duty 4's price hasn't drop greatly in the past 3 years it still sells for a good 80NZD brand new.
As long as Infinity Ward is getting money from their games they will never shut them down or stop production. Also COD4 is one of the most popular games on PC and one of the best Youtube worthy games. This leads to advertisement which leads to more money.
So in a short and simple way, NO they will shut them down anytime soon.
Posted on Wednesday, 3rd August 2011