Couple things :
This is absolutely happening. They have the license, they are a well known company that makes board games. It will be out around October, maybe later.
You don't have to go in on this Kickstarter to get a copy. It'll be available at retail (more specialty stores tho) in October.
If you are going to get something off Kickstarter, go for the Mass Hysteria and other KS exclusives, those will never be re-released.
They tend to, and have said they intend to for this specifically, release more "stories" down the line. Meaning new game board tile pieces, objectives etc. to keep things fresh.