WARNING: fmp13.0v2 seems to have multiple layout rendering problems.
In our DB our complete navigation bar disappears (See screenshot - and see FM Bugs http://forums.filemaker.com/hives/1eea103f05/summary for more similar problems.
My recommendation is DO NOT INSTALL IT!
At the very least you should install it on a test system and EXTENSIVELY check the layout-rendering of existing databases.
First get wise!