Not much to go by, but it’s Maxis’ first developer blog, with a brief announcement from Lead producer Kip Katsarelis:

Welcome to the SimCity Developers Blog! Hello, my name is Kip Katsarelis and I’m the Lead Producer for SimCity. Today we announced the reboot of SimCity and launched our brand new portal. We know that fans of the franchise will be eager to learn more about the game. Our goal is to let you know what’s going on with feature development, give you a behind the scenes sneak peak and let you see what’s happening here at the Maxis Studio. I speak for myself and the entire Maxis team in saying we are very excited to finally be debuting SimCity! Check back soon for an update on our announcement from GDC. Rejoice fans, SimCity is back!

Link here