I'm in the same boat...I just loaded the game up today and downloaded the new patch and the game crashes before it will even load. I't wont even load into safe mode without crashing. Lets try and dissect this problem. I just downloaded the 14.whatever mantle drivers from AMD the other day for battlefield. Are you running AMD's new drivers for mantle? I'm wondering if these set of drivers might be conflicting with the new patch. And if your running intel, then I'm totally lost. This **** is getting ridiculous...its bad enough i can barley play the game with a 3.6 ghz processor and a 7870, but now I can even load it period.
I moved your thread to the support section of the forums so that we can further assist you. Can you please post your pc specs or dx diag for our reference? I recommend trying the suggestions listed here Activision Support. Also, have you tried verifying your game cache via Verify Game Cache Files (GCF).