Did they find a good font license yet, or are they still using the temporary Ubuntu Font License? There's nothing wrong with that license per se, but I know they were trying to make a better license for fonts in general to reduce license proliferation.
http://font.ubuntu.com (linked in the article) still says "Ubuntu Font Licence 1.0", and the "Licensing FAQ" says "For the short-term only, the initial licence is the Ubuntu Font License (UFL)."
