Hi Jason,
The first set of pictures where taken August 1, 2010 and the others where taken today. Exactly 1 year apart. The only difference that I can say is that we have had right at 3" of rain for the year which is probably why the fruit are smaller. You are correct on the pictures. The first pictures where taken of the tree on the left side of the building and today I took pictures of the tree on the right side of the building.
Here is a picture of the same tree that I took a picture of last year.
The leaves do look different this year as opposed to last year on the same tree.