I'm a bit of a lurker on these forums, but I'll make a rare post
It's only 6 days until The Smiler opens so speculation is pretty futile but its still fun xD
I think it's highly likely that there is something different about this ride, I would find it hard to believe there wouldn't be, after all it's John Wardley's final coaster and it's been hinted at multiple times. I don't think, however, that the press and reporters who have ridden on it have experienced it. It could just be vain hope because I'm a little bit disheartened by people's reactions when they leave the ride. I was expecting the kind of "mindblownthatwassoawesomeiwanttodoitagain" effect...
I agree that there'll probably be digital mapping, 3D stuff, etc. at the start of the ride and TV screens and perhaps more marmalization before and on the vertical hill. I'm also not convinced there will be much at the end of the ride seeing as they would want to get the trains back to the start, unless there was some sort of show/experience when you get off, providing you don't get off and on at the same place :/
I did bring up the point of the CCTV camera theme when I last posted here, which was agessss ago, and from the video competition for the Smiler and from the emotion cams they are using in promotion, I'm guessing they'll be something along that vein. I just hope it works well though because I'd hate to be disappointed by technology.
I also think that, yes, they will have marmalizer themes in the queuing section and, maybe a sort of pre-show/initiation part way through the queuing (as in Tower of Terror). But I can't help but see it a little like entertainment and a distraction from queuing.
Whatever happens, I think personally I want to wait until I ride it myself to find out what it is. Someone told me what happens on TH13TEEN before I went on it and I really regretted knowing ): Hope it lives up to expectations !