No these ones are not the Sandy Bridge you all should be excited about the 6/8 core one that will come later on.

The initial ones will be dual and quad in flavor and you all should know these are based on a non tweaked version of sandy bridge, the 6/8 core one on the other hand is gonna be better.

Also dont expect a huge jump from these dual/quad sandy bridge cpu's. I expect in clock 2 clock comparison would paint a picture like dual llano < dual sandy bridge < quad llano < quad sandy sandy bridge in performance