The feature enhancements documents for Microsoft Dynamics NAV 2009 describe the enhancements to Microsoft Dynamics NAV 2.60 through 4.0 that are included in Microsoft Dynamics NAV 2009.
The feature enhancements are categorized by granule ID. This will show the new features added to granules customers have already purchased and aid customers and partners in the upgrade process to Microsoft Dynamics NAV 2009.
https://mbs.microsoft.com/customersource/documentation/whitepapers/NAV2009FeatureEnhancements