The Fall offers (Oct-Dec) are not released until July/August, so we have a little while to wait. PIN codes for that time frame should go out within the next month or two. They are usually a good indicator of what to expect for the public offers, but depending on how well the PIN codes fill rooms, they could narrow the dates for the public offer. I suggest subscribing to this thread...
I do know free dining was offered as the bounceback this past September for September of this year. We can't make a September trip work, so we are hoping for free dining in November also!