The official YouTube account of Warner Bros. Pictures also uploaded the trailer of 'Harry Potter and the Deathly Hallows - Part 2' (watch here).
If you notice the title of the video is:
So it only means, they will again release another trailer in the coming weeks, maybe for the film 'Green Lantern'. And IMX 3D always have a different trailer, so that's another trailer for this film.
Photo by Warner Bros. Pictures