I don't want anyone in the area to get too excited over this and wait but: sometime in the future the FL & GA Costco's are going to sell passes. Last year our local Costco's sold a 3 month pass for $89.99 they stopped selling them a few months before Harry Potter opened up. I've been told that they're getting ready to sell these again, most likely between $99-$109. This may not happen until after Haloween or maybe 1st quarter next year. (Jan-Apr.)
The 3 month countdown starts when you activate them at the park, it does expire (probably 2012) and from what I recall, there's no black-out dates.
I'll keep you guys and gals posted when I get more info on this pass.