The update seemed to go more or less okay using the UK mirrors.
At some point I left for a few mins, when I returned the screen were completely blank. Pressing random keys and the "obligatory mouse click(tm)" didn't do anything, even tried switching tty's, nothing. So thinking it's smegged (broke) I initiated the sinking ship three-finger-salute (ctrl+alt+del) and somehow a tty appeared yay.
Spammed the pacman -Syyu repeatedly until no more updates were found, rebooted and everything seems okay.
Nice job guys!