In the Dock Options windows for each dock, you can now set the icon size to anything from no icon to 128x128 pixels, you can change the width and positioning of the names, and you can even put the tabs in the middle of a dock if you want. Most of the options will change the dock appearance in real time so you can see how it looks instantly.
In the Preferences window, you can now set font and style information such as bold and italic, or choose to use one of the standard system fonts.