This is a straight-up grab of gameplay from one of our missions, and while it's technically 'work in progress', it gives you a good idea of what the final product will look like. We've got lots more like it; this mission is one of our smaller ones.
One thing Fury didn't mention is that this trailer, in my opinion, shows off some great custom AI - not just on the fighters, but the flak turrets on the GTVA ships, which just look gorgeous.
This isn't a particularly heavily produced product, so don't expect God's own video quality or epic staged choreography, but there are some pretty great glimpses of the skybox as well as some sweet combat. Wish we could show more from later missions...