I was sold at "I'm going to have to science the shit out of this."
LOVE that line.
They've definitely changed some stuff (it looks like maybe he can talk with NASA instead of just text, and it looks like the way they find out he's alive is different) but I think most of the trailer is from the last twenty minutes of the film, because that's where the high stakes drama is.
Suffice to say, I am bouncing up and down with flappy hands every time I remember this movie is coming. I am so freaking excited. Maybe I will read the book a few more times while I'm waiting.