So I for one am hoping for a number of things in this announcement coming up.
First I hope for a good modern style flat ride. I look at some of the more recent flat ride additions at Canada's Wonderland in a Frisbee style ride, the huss jump and things like that. I really think DL's flat ride collection is aging quickly and will all eventually need replacing with new and modern flats. My guess is a frisbee, but they could easily add two flats as well (there is a flying carpet hanging around basically free)
Second, I expect to see a new themed restaurant to be made inside the park, or just outside the current park limits either by the campgrounds or the hotel, but not far from the current park. Can we say BBQ??
Third, to go along with the new ride, another newly themed area of the park.
Fourth, I expect the announcement that Cuda Falls will be torn down and replaced with a new traditional style slide complex that will be placed over in the same area as the rest of the current waterpark.
Lastly, I expect them to announce that this coming year will be Predator's last year, so come on out and get your last rides on Predator before it is gone
I look at how some of the other HFE parks like Dollywood make announcements, and it looks like they add flats and slides and then add a coaster the next year. It sees HFE likes to have more than one item on the announcements alot of times.