Who is Fedora for?

I think we need two parts to it; one that days "You currently have package FOO installed; would you like to try the version in updates-testing?", and a second to kick in after a few days to say "You currently have a testing version of package FOO installed; would you like to give feedback (Positive/Negative/Not yet)?"

A third part to say "You have a testing version of package FOO that has been withdrawn; would you like to roll back to the latest stable release?" would be nice too.