Beware from upgrading on AMD64. Make sure to avoid version 2.1.3-3, as this will render your system unbootable and unusable. As simple as the reason is (a missing link) as severe.

Bug report with instructions on how to recover. If you are lucky you have a root shell open to restore the missing link. Otherwise, you need to reboot with parameters break=init rw, recover the link with cd root; ln -s lib lib64, sync, unmount, reboot. It's not really hard to do when you know how. But it is a lot easier to avoid upgrading to this version. My i386 mirror already has the fixed upload (but i386 is not affected anyway). So by tomorrow, it should be safe again (depening on your mirrors delay).