You know it's going to be a bit more faithful when it paraphrases the first few lines from the book. You also know it when it features a beautiful Marauder-type Starship Trooper. While it lacks 'a mad scientists rendition of a spider' it's one step closer to being faithful and frankly that gets a lot of points in my book
Would you like to know more? [http://www.starshiptroopersinvasion-movie.com/]
EDIT:There are two planned Starship Troopers films which are unrelated to each other. One is a live-action reboot which features the writers of Thor and X-Men:First Class. The other, this one, is an animated 'sequel' which features the man responsible for Appleseed.