Okay, things are looking good for us to update to Minecraft 1.3.2 on our servers. To give you a bit of a warning, I won't do it until Monday.
There are many changes but the one that you might want to prepare for is the change in the recipe for books (Book - Minecraft Wiki
). In 1.3.2, books need a piece of leather to be made. Bookcases still need books in their recipe. However the new books can also be made into Book-and-quill, which is a book you can title, sign and write in. Books made by the old recipe cannot be converted into a book-and-quill.
Therefore, people may want to start getting a herd of cattle breeding and make bookcases now. Otherwise, they are going to have to get a lot of leather in the future.
The only other change in 1.3.2 that you may wish to prepare for is the fact that zombie pigmen will be able to occasionally spawn in the Overworld near portals. While this is rare and they are peaceful, some may wish to adjust their portals or buildings in light of this.
The admin team is still discussing a few possible changes in light of other 1.3.2 changes. If we decide on anything new, we will try to inform you ASAP.