It might not get one, but I think an alternate form would only improve Kyurem. Although the covered up Pokemon is most likely Keldeo at this point. The movie should be announced soon, since merchandise is already being shown this leads many people to believe that the announcement at Jump Festa will be the film and Keldeo, however there is even a slim possiblility that the Third game is to tie into this and will go along with the movie, such as what happened with Platinum and the 11th Pokemon movie with Giratina and Shaymin, I think anything could happen though. Jump Festa is a little over 2 weeks away and details could emerge from CoroCoro as well.