Dawn,
[Written on Saturday, March 1, 2008, 3pm ET]
Good news: I just checked the
WDW Calendar and all of the park hours are up and running for September except for the Magic Kingdom and Hollywood Studios. In general the park hours are typically posted at or very near the first day of the month, six months in advance. Based on my personal experience, I am very confident that all of the parks will be posted by Monday and you might even see them complete by the end of today.
Who knows, perhaps Tinker Bell slept in, or today was Sleepy's turn on the calendar. ;-) Rest assured that the calendars will all be finished very soon.
Have fun planning for your September trip. I hope you get perfect times for all of your Advance Dining Reservations ("ADR"s)!!