'Children Of Earth' Trailer

The trailer for Series 3 of Torchwood: 'Children of Earth' has been released and is now available to watch on the official BBC Torchwood website. In the trailer children across the world have "stopped" and can be heard chanting, "We are coming", which seems to be this series' slogan. Also, there is a very quick glimpse of a brand-new monster/villain creation, presumably from Neil Gorton and his team at Millennium FX and a big explosion (which some of you may already know about, but I won't explain for 'spoilerific' reasons).
You can view the trailer below below (unforfunately this is only available to residents of Britain):


What do you think of this trailer? How excited about 'Children of Earth' are you?
Please comment.