Description of problem: usermode/consolehelper is deprecated since Fedora has a better framework now called PolicyKit. Please switch to using that instead http://fedoraproject.org/wiki/Features/PolicyKitOne
Fine, but where's the porting guide for converting consolehelper apps to use PolicyKit? The only porting guide I've found is http://cgit.freedesktop.org/PolicyKit/tree/docs/PORTING-GUIDE - PolicyKit to polkit1.
consolehelper and PolicyKit is not really at the same level. So it is not really a port. You can look at how PackageKit does it for example. Might be overkill for Preupgrade. So I will it upto to you.
Added 'FutureFeature' keyword to avoid rawhide base
preupgrade was retired long ago. Closing.