The repository shuffling is over, there are some changes:
The current repository is gone, instead we have the core repository now. A pacman update will add /etc/pacman.d/core and users should change all "current" references and URLs in pacman.conf to "core". We added compatibility symlinks, so old configurations should still work for a while.
Users who haven't updated to pacman3 yet should do so now, as our repositories will become incompatible to pacman2. You can still update by manually downloading the libarchive, libdownload, fakeroot, and pacman packages from the ftp and installing them with pacman.
Our recent changes break FTP installations, so use a base CD and do a base installation for now.
For more information, see the mailing list thread at http://archlinux.org/pipermail/arch/2007-September/015430.html