Microsoft will unveil its "Sidewalk" city directory on April 3, with the Seattle site to open first. Sidewalk directories for New York, Boston, San Francisco, Minneapolis-St. Paul, Washington D.C., San Diego, and Sydney, Australia will follow soon thereafter. Microsoft would like to have 15 cities online by the end of the year. The city directories will feature news and information about local restaurants, movies, music, the arts, and more.