@Turbo, yeah they said specifically that you'll be able to bring entire buildings down and blow walls apart like BC2 but they're not letting you destroy everything altogether. I think the reason for that is they want to keep a bit of map structure. If everything could be leveled then you might as well play in an open field with no cover or interesting map pieces. Also it looks like they're going with a much bigger scope. I doubt the engine could support every single thing being destructible.
Right, and that's fair enough. Even if the extent of the destruction is just having the ground floor collapse and the second floor stay somewhat preserved (but fallen down), I'd be happy.