I need to know whether a 27" retina iMac will work with TWO of these displays via Thunderbolt ( http://accessories.ap.dell.com/sna/productdetail.aspx?c=au

I want to use two Dell 34" Curved Ultrawide Displays (Dell Ultrasharp U3415W) - see http://accessories.ap.dell.com/sna/productdetail.aspx?c=au&cs=audhs1&l=en&s=dhs& sku=210-AEBS&redirect=1 but from what I can see the only two Macs that will run them at full resolution is either the Mac Pro (too expensive) or the Retina iMac. Can someone confirm that a Retina iMac will be able to run two of these, each at 3440 x 1440 using Thunderbolt to give me a massive extended display system?

thanks

Malcolm