I\'ve searched loads already and couldn\'t find an answer.
I have a normal UILabel, defined this way:
UILabel *totalColors = [[[UILabel alloc] in
Not in any publicly available version of iPhone OS. ;-) If you are a current iPhone Developer, you can get an idea of where iPhone OS is going by looking through the "What's New" notes for iPhone OS 3.2.
Update: iOS v3.2, which added support for kerning, was still under NDA when I posted this. For an update-to-date answer, see How to set kerning in iPhone UILabel.