Having read the same discussion that you are referring to, I think they were talking more along the lines of the fact that we're probably going to be getting some concept art for the ride vehicles and the area in general as well as possibly a POV ride through via CGI. It also sounds like we're getting a LOT of photographs from areas that the GP can't photograph easily, as well as better angles of stuff that we've already seen (the drop, GICT, etc.)
That said, I suppose it would be possible for there to be some other goodies in this announcement (maybe a flat ride or two out by the coaster to help round out the area) or other offerings at the park next year, but I'm more inclined to think the "surprises" are more along the line of the stuff in the last paragraph.
EDIT:
Looking at the photograph of where the coaster/area is supposed to be, is there any confirmation or speculation to be had about how exactly park visitors will be getting out to that area? Other than a path in the really narrow looking area between FITH, the Opera House, and Powder Keg, it's hard to see how you'd get out there. It'd be questionable design/layout, but possibility of it only being accessible via a new station for the train?