Letter spacing in Text

Hi guys, I'm using the new Unity 4.6 GUI but I noticed a problem with the Text component. I don't find the option of adding space (in pixels) between a letter and the other. Previously I used NGUI and with it there was the possibility to set a certain space between letters.

I believe that this feature isn't implemented yet because this is a beta!

Tell me if there's a solution, thanks,

Marco