General Jeffrey Sorenson, the CIO of the US Army, dressed in battle fatigues, addressed the audience. The "Army of the Future" is preparing for an era of persistent conflict. Geez.
General Sorenson showed an interesting chart that shows commercial technology and army usage of that technology on the same graph. There's basically an 8-10 year lag between the development of a technology, such as the Internet, and the deployment of that technology in the Army.
Battle Command Knowledge System (BCKS). The Army is using software similar to WebEx or Go-To-Meeting for their training and battle planning.
Command Post of the Future: a Web 2.0 app that integrates satellite, video, VOIP, 3D topography, DB access, and collaboration tools for real-time battle management. This tool was developed by DARPA.
In their overall architecture, the Army is using Keyhole Markup Language (KML) to access data from Google Earth and other mapping databases. Field units are using RSS to stay informed with battle commands and information.