Yes, that is right. The 3D version of The Force Awakens Trailer 3 is now available, and can be found over at The Force Awakens page. I compared the sound to the earlier 2D trailers and I did not notice a change in the dynamics, but it is louder. I am not going to modify the 2D versions at this time unless there is an interest in me doing so.
I have a few more trailers to upload before the week is out including Warcraft and the new trailer for 13 Hours: The Secret Soldiers of Benghazi.