Looks like word got out early on Dell's Studio Hybrid small form factor system. We've actually seen the design before, , with news of new Intel mini-ITX motherboards.
We also saw this system at a Dell media preview a few weeks ago, along with few other laptops it's also had.
We liked what we saw of the Studio Hybrid in our brief time with it. Aside from the casing and the stand, both of which are removable, it's roughly the same size as Apple's