I have an WiX installer project that I wanted to produce the output as the product name and version number. This is pretty simple to do. First unload/edit your project file and then update the "AfterBuild" target as follows:

<Target Name="AfterBuild">
  <GetAssemblyIdentity AssemblyFiles="$(SolutionDir)MyApplication\bin\MyApplication.dll">
    <Output TaskParameter="Assemblies" ItemName="GetVersionAssemblyInfo"/>
  GetAssemblyIdentity>
  <Copy SourceFiles="$(TargetPath)" DestinationFiles="$(TargetDir)MyApplication%(GetVersionAssemblyInfo.Version).msi" />
  <Delete Files="$(TargetPath)" />
Target>