It's called White Tiger and it appears they went to a lot of trouble making this tiger and also has lots of russian armor....
http://www.youtube.com/watch?v=Gm2jcoxy ... re=related
It doesn't actually feature the all-but-exact Tiger copy which was actually made for the film. I can't remember whether it was because it took too long to finish the Tiger or the filming finished early but the Tiger in this clip is the second copy which is nowhere near so good as the first (which, incidentally, I believe has been sold for a VERY large sum).
Full story is here - (you'll need a login to Wehrmacht-awards).
http://www.wehrmacht-awards.com/forums/ ... p?t=548512
Extract ("No it was not used, as Stepsam explained they didn't have time to complete the more accurate Tiger replica for the movie. The "Tiger" used in the movie is more of a fantasy vehicle, even though a quite good looking one. If I read the Russian text correctly (I'm rusty) that vehicle is built on a ISU-152 chassis and this should be a picture of it while still being built, the finished build is secret until the movie premiers ...")