Hey, did you manage to schedule a post??? :D

Kind of...Basically, there's an ability to email in your posts, and if you "schedule" your emails to send at certain times (like with the boomerang add-on for gmail) then they post at a certain time. Unfortunately, there are some issues with it that don't make it a super viable for things like fest posting, since the formatting gets a little wonky, and I think there's a 3 tag minimum...

Here's the FAQ on it.