nopCommerce_4.20_Source.rar - Download if you are a web developer interested in nopCommerce source code. Visual Studio is required.
nopCommerce_4.20_NoSource_FrameworkDependent.rar or nopCommerce_4.20_NoSource_SelfContained.rar - Download this package if you want to deploy a live site to a web server with the minimum required files (no source code included). Visual Studio is not required.
nopCommerce_4.20_UpgradeScripts.rar - Download this package to upgrade an existing installation to a newer version
To see the full list of fixes and changes please visit the release notes page