Gaming Nexus has an impressive preview of Galactic Civilizations II.  Its preview highlights the differences between Galactic Civilizations I and II.

Suffice to say, Galactic Civilizations II isn't just a graphical facelift.  With the move to a 3D engine, all kinds of new gameplay elements become possible.

Amongst the changes they discuss: The new colony system, ship design, fleets, and the campaign.

Read the whole thing..