For a while Foresight Linux users had no graphical interface for managing their systems packages and/or updates, mainly because the development for the conary backend fell out of scope and our radar (this is a nicer way to say that we didn’t have someone to maintain it). But thanks to the work of zodman, jesse and others PackageKit is making its way back to our desktop.
There’s still some work to be done but I believe that most blockers and kinks have been ironed out, as I have been able to use it to install packages and update my system in the last couple of days. Once we deem it stable for generic use, you will all get it the next time you manually (hopefully, for the last time) run: sudo conary updateall
If you got copious free time or are just curious about the conary backend, clone the PackageKit repository and check it out.