Mechanist Games has announced that the first City of Steam closed beta event will officially kick off on November 16th. The closed beta will run for five days during four separate events from November 16th through the end of December.
The developers have also given a set of goals they can strive to for extra Closed Beta content, through what they call Steam-o-meter. City of Steam fans are encouraged to support the game and spread the word on social networks to increase points on the meter, which will in turn push content previously planned for Open Beta to instead be made available in Closed Beta. They have included a handful of developer humiliations for extra motivation as well.
Sign up for beta testing on the City of Steam page.