Giving this thread a quick bump to remind people the deadline is Thursday at midnight. However, if you still want to submit a work or WIP after the deadline you are more than welcome. To be honest I don't think I'll finish mine in its entirety beforehand either.
EDIT: actually, on second thought, perhaps it would make more sense to extend the deadline for another week, to the 30th. This way, the first challenge can be for September instead of August. It just seems odd to me that the September challenge would end on October 22.
Again, you can submit after the deadline, but make sure your vote is accounted for in the first post of this thread beforehand so the votes can be tallied.