The first major update to Steam Greenlight has been released today, aiming to improve discoverability of games and reduce the amount of clutter. You can read about the update over on the Steam Greenlight blog.
Steam Greenlight was released on August 30, enlisting the community’s help in picking some of the next games to be released on Steam. Developers post information, screenshots, and videos for their game and seek a critical mass of community support in order to get selected for distribution. Steam Greenlight also helps developers get feedback from potential customers and start creating an active community around their game as early in the development process as they like.