"so established frnachise, odd announcement time, hype low, quality high, less cool than pokemon, interesting feature, it will shock you, but wont blow you away, not a megaton, something no one can guess. so just an average nintendo mystery then."
There are three possibilities then. It's either Pilotwings, Ice Climbers oooooorrrrrrrr...
... it might be Kid Icarus. But since that would be a big thing, it's Kid Icarus on-rails.
I'm going to guess Kid Icarus on-rails.