Pages is now more integrated to useful third party applications, such as MathType and EndNote, which allows users to enter mathematical notations and manage references and bibliographies.
MathType is a tool that makes creation of mathematical figures easier for popular word processors. It was developed by Design Science and has been compatible with Microsoft Office 200, XP, 2003, and 2007. With the recently updated Pages, Mac users can now utilize MathType 6.0's features with iWork '09.
EndNote, on the other hand, is a reference management software that makes creation of bibliographies and citations even easier. This third party tool was developed by Thomson Scientific. With Pages in iWork '09, users can now benefit from the features that EndNote X2 brings to the table.
Apple has integrated MathType and EndNote with Pages and can now be accessed simply by pressing menu items. The Pages site graciously discusses this new feature via video tutorial.