Pics:
Previews:
IGN (5 Unexpected Joys of Super Mario 3D World)
USGamer (Super Mario 3D World Brings Back the Insanity Factor)
Shack News (Super Mario 3D World Preview: Cherry Fun)
NintendoWorldReport (It's a Double Cherry All the Way)
Cat Goomba is pleased.
Other official pics/art here (Courtesy of GameReactor)