Fusion Applications is Oracle's next-generation suite of integrated applications currently in development. It combines capabilities from Oracle's existing product portfolio with a new rich user interface and embedded analytics. Key areas covered in version 1.0 include financial management, human capital management, sales and marketing management, supply chain management, and project portfolio management. The document provides details on the new user interface, functionality in various modules like general ledger and accounts receivable, and enhanced setup and transaction processes in Fusion Applications.