tried foresight linux.as of now it got packagekit included(though I dont find it worth!).still conary is to be used from terminal.
but conary may not be able to get attention unless they have a succesful distro in hand(rpath &ken van dyne)
conary just downloads what is needed.it doesnot upgrade to new packages from scratch.instead,downloads the diff and installs the new updates.
http://en.wikipedia.org/wiki/Conary_(package_manager)