Well sorry to say this, but DX11 looks like DX9 done in a bit different way. AMD payed for DX11 promotion, but rebellion won't change graphics a LOT. If you look at that trailer, you'll see that textures are flat and low res. No bump mapping or displacement mapping. Look @ the environment - low mipmap levels, bad texture filtering....oh my.... A console port with tessellation.
But still, can't wait!
AVP 1 and 2 graphics are old now, but they did such a great job - it's still very fun to play!
Hope the same with avp3
