Not much new information - well the big face insiders, maybe.
But it's already known that Gantz is alien technology. They fought with aliens. The invasative aliens were advanced, and strong. They all came, because they world is dying, but for what, where?
The interesting part is what will happen now? These new aliens will go away, stay, kill everyone - not likely - give the big 42 and happy end? The Gantz upper management is dead, but the technology is there across the world, with it, someone can rule the world, will the human race prosper or kill itself?
This inferior insect comparison, as contradictive - for the alien point of view - as someone already discribed; humans are arrogant - they are, but for this? I think it's a little under the Gantz limit, but the faces were shifty :)
For all can't wait til september..