Until about 20 minutes ago, we’ve known precious little about this summer’s super-secretive, J.J. Abrams-directed, Steven Spielberg-produced Super 8. Previous teasers have spilled few details: an exploding train here, a felled telephone pole there. But now, thanks to the brand-new trailer that just debuted during the Super Bowl, we finally have some details. Judging from the all-too-quick spot, the movie looks very Spielbergian in tone and mood. The wondrous music, the small-town Americana, the kid riding his bike through a field. “Do not speak of this. If you do, they will find you.” What else? Elle Fanning looks tall next to that kid. And Kyle Chandler stares intensely at… what?