Game Informer preview, Page 58:
"Some unique words of power are spoken as a whisper, to aid in a stealthy approach, like the one that sends you instantaneously from one place to another."
So, yeah, whispers are in, but not everything can be a whisper.
True, I'd imagine that only certain stealth oriented "shouts" (calling something that must be spoken in a whisper a shout seems like a bit of a contradiction.) are spoken in a whisper. Since I think dragon shouts are something all players can use regardless of their skills, I'm guessing there will be shouts aimed at all three character archetypes, meaning we might get shouts intended to complement magic as well.
getting outta jail is gonna be a walk in park.
Not necessarily, there's likely some limitations on said shout, I'm guessing it only lets you teleport to somewhere in you're line of sight and possibly can't even go through barriers, or maybe it can only be used when you're not being detected, the latter would make sense if it's intended for stealth as otherwise, I could see such a shout being useful in combat as well.