City-builders are in luck. Developers Focus Home are planning to make and release a new version of the Cities XL game they announced today; aptly titled Cities XXL.
As this is just the first announcement details are not really available, but they have said they plan to make use of multi-core CPUs to make sure that a smooth FPS is always available for the player no matter how large or complicated a city might get to be. It's also yet to be seen what they plan to offer those who purchased Cities XL Platinum released back in February (such as a discount) or indeed if anything will be offered at all.

The announcement was made over Cities XL's Facebook page:
“We're thrilled to announced the return of the world's largest city builder, filled to the brim with new features allowing you to expand the scope of the game further than any Cities XL game before it. Introducing: Cities XXL!
“Create and manage enormous cities on the latest version of the 'Cities' engine with multi-core support. With a smooth FPS no matter the size and complexity, there are no longer any limits on the richness and diversity of your sprawling metropolis. New features, buildings, and other details will be revealed over the coming weeks.”