WP7 app version

A Windows Phone 7 app, it seems, has two places with version number - one in AssemblyInfo.cs (via AssemblyVersion/AssemblyFileVersion attributes), the other is WMAppManifest.xml. Those two seem uncorrelated - changing one does not affect the other. The Marketplace, it seems, uses the one from the manifest - can someone please confirm this?

The real question is - how do I retrieve the one from manifest programmatically to display on the About screen?