A new article has popped up on Gamespot. Nothing too new but it does mention some things about the creature editor as well as some detailed info on the Tribal and Creature stage. Apparently, the population needed to reach the civilization level will be 15. Also, If you wish to befriend a creature early on in the game, you'll have to "sing". Singing will most likely be determined by you charm level. As you progress farther, you can engage in more complex social actions, such as dancing or gestures. There is another 1UP article here as well. Thanks to markiey for finding this for us.
Here's a snippet on a creature being created and tested in Spore:
"The creature created during our presentation had four legs, two of which were inverted. It had two arms, it had spikes on its knees, its eyes were on what we would've assumed was the chest, and its mouth (beak, actually) was positioned high above its torso at the end of a long neck. In short, it looked like nothing we've ever seen before, but as our presentation progressed we got to see the ungodly creation walk, run, dance, sing, fight, and even re-enact a famous scene from 2001: A Space Odyssey by tossing a piece of wood up into the air in slow motion while orchestral music played in the background."-Justin Calvert, GameSpot
