Battlefield 3 is coming out. the game is gonna be so epic with its advanced graphics and realism. im quite sure this would be a much better hit than mw3...which i believe will still not have destructible environment.
Check out the trailer here http://youtu.be/2zw8SmsovJc
Frostbite is not a physics engine. Besides the gaming engine Frostbite, EA is implementing the Havoc engine like with Bad Company which is rather sad as that physics engine is horrible compared physx at producing realistic physics
Still is the most realistic and smoothest Engine out and will be for the next few years since no other major company is spending millions of dollars into their engine for a whole new design of it like EA and DICE did.
EA could have implemented physx. Frostbite has NOTHING to do with pure physics which Havc and Physx produce. The main difference is that Havoc runs on the CPU, and physx runs on the GPU.