[arch-general] Repo Structure - Pool Dir

[Matthew Gyurgyik]

  Hello.

Currently I see that there are some packages in 
/archlinux/extra/os/i686/ and some symlinks to ../../../pool/packages/.

I was hoping a dev would be able to answer the following the questions?

Eventually, will all packages (from core/extra/community) end up in pool?
Repos like multilib, gnome-unstable, kde-unstable will not end up, right?

Thanks,
~pyther