For non-Brits/Europeans: here's the link to the US pre-order for the 3 disc edition. Unless you have a region-free DVD player, the European edition will be PAL and won't play on N American NTSC players.
http://www.amazon.com/Generation-Ter...mm_acd_title_0
EDIT: Actually it's an Import which is a bit concerning because the DVD may very well be in PAL format after all. Shit!