WPF 4.0 introduces new text rendering options. You can customize Tabs Studio text with these new options in Visual Studio 2010 Beta 2 using a style like this one:
<Style TargetType="TabsStudio:Tabs" BasedOn="{StaticResource DefaultTabsStyle}">
<Setter Property="TextOptions.TextFormattingMode" Value="Display"/>
<Setter Property="TextOptions.TextRenderingMode" Value="Aliased"/>
</Style>
Text with display aliased options
Text with display aliased options 3x zoom
It would be great to make sharper text works in Visual Studio 2008 as well, but right now I don’t see a good solution. Simply installing .NET 4.0 Beta 2 runtime on a Visual Studio 2008 machine doesn’t make these new options available to Tabs Studio automatically.
Tabs Studio Blog (organizing Visual Studio document tabs) 