The 3D version of trailer B has been added. Unfortunately due to the size of this file (827 Mb) we had to upload it to an alternate location. The audio is in DTS-HD MA and Dolby AC3 5.1. The file will play back in both 2D and real 3D. The download link can be found at The Martian trailers page.
We have a few more 3D trailers that I will be adding soon, including Goosebumps, Underdogs, and The Finest Hours.
** Update **
2 new files for Trailer B have been added: An .mp4 with Dolby 5.1 and an .mkv with DTS-HD Master Audio