So, we know that the ultrabook is like the Windows version of the Macbook Air. Here is a Youtube video of the Asus UX21.
It's a very Air-like device. It's being pushed out by Intel as an answer to the new subnotebook category.
The old answer, the netbook, was a low cost device solution that quickly died as the iPad took the world by storm.
Of course, Intel is also playing defense here to preempt what could be coming: Apple taking its business else where and use its own ARM chip.
So, what do you think?
To be fair to Apple, you can run Windows 7 on the Macbook Air. And you'll have a good time of it.