The devs are trying to include a neat feature. Creating a "virtual display" within the game to allow you to take very high resolution screenshots. It is a work in progress but they hope to include it in the shipped game. Here are a few examples, I am going to just put up the links to the images as they are MASSIVE.
http://img715.imageshack.us/img715/4052/2city09.jpg
http://img221.imageshack.us/img221/904/2city04.jpg
http://img341.imageshack.us/img341/6582/1city02.jpg
http://img651.imageshack.us/img651/7152/1city00.jpg