This is news to me! 
I was reading through DiCE's development history on wikipedia when I stumbled upon this little gem: 

    BioWare lead sound designer Rob Blake said: "We've been chatting to the guys over at DICE who did the Battlefield and the Medal of Honor stuff and we've been doing a lot of knowledge sharing and asset sharing with those guys." But what does this mean for the game? "We're taking on board some of their environmental changes that they've done really well," said Blake.  

So does that mean that Bioware wrote the story for battlefield 3.

and by gunplay I meant the audio of the gunplay... yep?  yep....

I'm just gonna get angry anyway because someone mentioned Mass Effect on the internet, if you don't mind.

Mass Effect 3 multiplayer will run on Frostbite 2.

I'm pretty sure I heard Bioware had already consulted with DICE for the gunplay on 2, so this isn't all too surprising. Shooting there wasn't great, but a notable improvement over the original, would be cool to see a comparable jump again.
 
Also, rawr, less of an RPG, I'm angry.

So camaros confirmed for ME3?