I just went over to the XPS 13 site, and I found this amusing image:

http://i.dell.com/sites/imagecontent/products/PublishingImag...

By the way, how about battery life?

According to this article, it has 5h of battery life. http://www.wired.com/reviews/2013/07/dell-xps-linux/

This is half of the battery life of a Macbook Air!

If they sold a similar laptop with a Haswell processor ...

That could be an option. But, I once bought a Dell Mini 12 with Ubuntu pre-installed and it was a nightmare. It used a modified version of Ubuntu (with ad-hoc repositories hosted by Canonical) with an unstable binary blob. Therefore, not only it didn't work well, it wasn't upgradable! If I buy a XPS13, will I get stuck with Ubuntu 12.04 for life? Will Ubuntu test its new version (at least the LTS ones) with this machine? If I buy a Mac, I'll be sure that it is upgradable for a long time and that Apple will support it.

Edited to add a link to my own account of the facts (2008): http://bits.quintanasegui.com/2008/12/30/dell-sells-ubuntu-b...