As announced here on the Railfan Window Blog first, the G line extension to Church Avenue is still scheduled to begin on-time on July 5, 2009.
Here is the Service Changes poster than New York City Transit finally uploaded to their website.
Service Changes: G Line Extension to Church Av beginning July 5, 2009
Tags: G line, mta, new york city, New York City Transit, nyc, nyct, penn station, subway, train