The sixth annual Tribeca Film Festival is skedded to run April 25- May 6.Screenings, panel discussions with filmmakers and special events will take place in various locations throughout Gotham. Submissions open Sept. 5. The early deadline is Nov. 17; final deadline is Dec. 8 for shorts, Dec. 15 for features. This year’s total fest attendance of 465,000 was up 69% on the 2005 fest. The five-day inaugural fest in May 2002 attracted 150,000.