One of the rumors I have heard about codex Apocolyse is that they will be releasing a Necron Lord on a Tombspider body. I heard that it will be the current destroyer Lord torso on a new tombspider-like body.
The only question I have is: What is the point? What advantage could this give? The only things I could come up with are a base toughness of 7, more close combat attacks, the ability to care heavier shooting weapons, or just a super-good way of resurecting fallen necron. After all a Necron Lord creating scarab swarms would just be silly, and just a waste of points.