Kimball,
TCP/IP means REAL TIME gaming. You could sit there at your PC and fight a battle in tactical mode with someone else on the other side of the country. You could spend an entire day gaming with a group of friends scattered all over the world without leaving home. Needless to say, there is a lot of interest in this.
But we've not been testing anything to do with TCP/IP so don't expect it "real soon" but rather "in a while". It's not going to be a simple thing to add.