I'm pretty sure that it'll be compatible. It's still using the same overall socket but it seems to be just a different revision. Intel and AMD have both taken great strives in order to maintain maximum compatibility with most coolers.
Plus if it turns out it isn't, I would head on over to Corsair customer service and request that you receive a mounting bracket for it since their engineers are probably already cooking one up if it is any different. Corsair is a good company and as long as you have your lot code (which is located on your radiator I believe) you're in good hands.
What are you wanting to upgrade for anyway? I've found nothing my 4670K isn't capable of gaming-wise. Only reason I can see 2011 as a valid platform is for...