I know New Moon is November 20th '09 but I think it will get delayed, because I believe the same thing will happen that happened to Half-Blood Prince. They would feel it was to rushed and wasn't a very good movie. So i think they will postpone it!
Breaking Dawn:Part One-Nov.17th 2011 Breaking Dawn:Part Two-Nov.16th 2012 Sadly, they are slicing Breaking Dawn into two parts. This is because since it's like a 700 something page book. They need to cover a lot of story-line, and to keep it from being like a four jam movie. They are making it two parts.