Well, Rei is leaning forward, so that's why she seems skinny there. And yes, this is from the 3.33 movie, and kind of a wallpaper for FINAL, the last Rebuild film.
As for the movie itself, I am extremely upset by how ridiculous it was, and am hugely disappointed by it. An unworthy sequel from quite an interesting cliffhanger. Now all my hopes for redemption lies with the next installation, which can hopefully do a better job and not pull out something so dumb as the 'twist' in Q again. Doesn't mean you shouldn't check it out though, it's still fun to watch and relive the characters (If you're a fan as I am).