From what I have heard, the next generation of Zambezi (what ever they decide to call it), they are going to rearrange the way the die is set up.
Now dont know if this it true. From the photo above of Zambezi.
1.Will be adding the L2 cache to the core like the L1 cache is, for faster access.
2.The upper and lower module will set on top of each other(without the L3 cache between them)
3.The L3 cache will down the middle between the modules.
4. The memory controller will be at the bottom of the die.
Plus I noticed Gigabyte pulled the Zambezi Support from the list.