Sorry for the late answer.
There are 3 new China and 3 new USA generals, and each general will have at least 1 totally new unit or building. Some examples of things that will be included: Artillery Tank (USA), Internet Van (China), Napalm Bomber (China), Patriot Tank (USA), Leopard Tank (USA), Infiltrator (China) and several more that will be announced later when GLA is completley done.
So... are these completely new Generals or can you only replace Generals like ra2/yr... cause thats stupid the way they did that w/ra2...