So the big question is...

What in the new Macbook (http://www.apple.com/macbook/) has changed if anything that would prevent me from upgrading that perfect case with an OS worthy such beauty?

I've seen the upgrade HowTo that makes a Macbook into a working Ubuntu system (https://help.ubuntu.com/community/MacBook) but I am concerned hardware changes will limit functionality in this new release. And its just to damn expensive to not have all the bells and whistles working.

~Thanks~