The Americans would not have noticed this. There is a new feature of Apple TV 2.3.1 that is of interest to iTunes users outside the US: ratings badges.
Ratings have always worked on the Apple TV for parental controls, allowing parents to prevent youngsters from watching certain content, but until now there were never proper badges to reflect the ratings of another country. Early on, the Apple TV would look at the rating, e.g. MA15+, and write it out in the system font. Later, this disappeared for ratings that didn’t match US ones, namely G and PG.
Now there are proper ratings for all Australian movie and TV ratings. The US G and PG are still substituted, and the Australian ratings are nothing more than the text of the code in a box, but they are now represented on screen. I would have preferred the proper symbols though.