If you find text readability in Visual Studio 2010 beta unbearable and can wait till Beta 2 for new text rendering stack that promises perfect text sharpness (better than GDI), kinda workaround is to increase font sizes…
BEFORE: 
Fonts can be changed in Tools > Options, Environment > Fonts and Colors.
For code editors change “Text Editor” and for code tooltips “Editor Tooltip” settings.
AFTER: 
