Who cares if its DX11. If the game looks as good as it does on the screenshots, who gives a f* if that is achieved through DX7, DX11 or OpenGL?
For those with ATI cards worrying; ATi are notoriously bad with OpenGL drivers, the fact CoD is a DirectX game (unlike IL2 which was opengl) gives you a good chance it will run fine. ATI's directx drivers are usually okay these days.
As for the specs; dont read too much in to it.
For some perspective, if you read the minimum requirements for IL2, they are:
• Windows 98/ME/2000/XP
• 1 GHz Processor Pentium 3 or equivalent
• 512 MB RAM
• DirectX 9.0 compatible 64MB Graphics Card
• 4 GB Free Hard Disk Space Required
I dont think you will enjoy IL2 a whole lot with those specs.
I dont mean to say CoD will be as bad on minimum specs, but there is so much variation depending on settings, maps, that its easy to bring a core i7 with a geforce 580 to its knees, while you can make it rather fluid on a 5 year old Athlon 64 with a geforce 7900. So a few arbitrary "minimum' and 'recommended' configs dont tell us a whole lot, if there is no mention of framerates or resolutions.
I guess we will find out when it ships
