Now that Anaconda has Yum support it would be really nice that when someone is building a new system after they finished selecting packages that it would ask the user if they would like to pull any updated packages down and install them during the install. Chances are most of the packages that they are going to install won't be updated yet but it would allow a System Admin to build a system and have it updated already.
Eventually, this is a goal, but it's a bit further out. Getting what we currently do working sitting on top of yum is a pretty significant amount of work and reducing the number of variables which could be a source of problems is the plan for a while.
This one should be possible for FC6, right?
Yes, it is now possible to install from an updates repo as well.