If you're wondering what we were talking about when we saw Battlefield 3 during GDC, the Fault Line gameplay trailers are pretty spot-on. In fact, they're exactly what we saw. Here's another section of gameplay that's not so new to us, but very new for you:
The effect of that rocket on the building was really impressive. The trailer cuts off but the press was shown the massive, gaping hole in the building that was left behind by the explosion. Stay tuned for more Battlefield 3 information in the coming months with a huge blowout probably centering around E3.