Editing Trinity:Races (section)

==Favored Classes==
You may notice that the vast majority of races have more than one listed favored class. Given the large number of classes available, it seemed foolish to me that each race would have a single class they excel in. Therefore, most races have at least one listed favored class. When you make a character of that race, you choose one of the listed favored classes to use as your character's favored class.

In addition, humans and half-elves no longer have "any" listed as their favored class. Instead, at character creation, you choose a single class as your favored class. Some other races also have this option.