Yes they do. I really like the idea of the destructible environment.
It allows you to create unique coverage, or take down entire buildings that might be full of enemy troops.

For those of you interested, this is set to come out in March.
Based on the amount of time and fun I had playing Battlefield 2,
I'll most likely be picking this one up.

Here's the official link

http://badcompany2.ea.com/#/home