I was just wondering the same thing so thanks for asking crazyboutWDW!!! I'm trying to get some idea of the June hours for our upcoming trip so this really helps.
I find it interesting that the Disney web site projects park hours for December 2005 "based on last year's operating hours", with the Magic Kingdom only staying open until 8pm the first few days that we'll be there (Mon. 12/19 on) - while
I hope we'll have later hours this year, 'cause we're more night owls than early morning folks. Guess I'll just have to wait till October or so to find out.