Thanks for gathering the info, Tristan!
I like how the multiplayer aspect is asynchronous; the way I understand it is that I can make changes to my city, and when I log off, my changes will affect anyone in the region who logs on afterwards. I'm not aware of too many games that offer this type of multiplayer experience, we can actually play together as an international community without the necessity to be online at the same time.
Edit: And with Zakis we now have five cities in our region, we're filling up fast! This is going to be fun, ^^
Darnit, now I'm pumped up... wish we didn't have to wait until March!
Can't wait myself, its been forever since I last played SimCity 4.