I actually had a moment of speculation in that direction, but then figured that it would be contrary to the trends/momentum in... I don't know, "design" and "image" and, well, "looking pretty".

Thanks for the information. And I'm kind of glad to read it. :-)

P.S. Shame on me, for not looking further into the release notes -- although I did take an initial look but didn't note this change.

P.P.S. http://blog.mozilla.org/ux/2012/06/site-identity-ui-updates/