This movie has recently been released in Region 1 with more extras. The differences are as follows:
The Region 4 version of this disc misses out on;
The Region 1 version of this disc misses out on;
The Region 2 edition is somewhere in between in terms of extras as it includes a longer Voices of featurette which actually includes the voice actors and the Aunt Fanny featurette but also misses the second commentary and some of the other minor extras. Region 1 by a mile.