Well, we have some new lyrics from the trailer, and some (what I'm hoping is) context regarding the original lyrics, now that we've gone through 2.55. Unfortunately, I believe at least some of the new lyrics are in Dravanian, or if not, they're drowned out by the other sounds, roars, explosions, etc. Still, it's something! =) The new lyrics I made out are bolded:
Heavensward
Beneath the gazing stars...
Vales deep and forest dark...
Betrayed by loyal hands,
our wrath stir.
Bound fast unto our fate...
One path, one burden great...
Yet ever do our aching souls point Heavensward!
And ever rings out our song...
Yes, ever do our aching souls march Heavensward!
As they've done for so long...
Dis an sô / Our slumber disturbed
Rus at hi / My brothers wake
Sal'jas afarr'a / Vengeance will be ours
Ma mor nâ, Eorzea! / The saviors must perish
Just as a heads up, major 2.55 spoilers below if you haven't finished the story:
I'm wondering who the betrayal refers to, particularly. My gut instinct would be us, the Scions, but I would hardly consider the Syndicate to be "loyal" to us in any way, and "hands" implies someone who aids or aided us. I also hesitate to consider it as Raubahn and Nanamo for the same reason, although Nanamo's maid would certainly be considered loyal. That pretty much leaves Ishgard and the Dravanians, so it seems like they may not have been enemies at first, as being betrayed would have implied, if not friendship, a mutual understanding between one another.
But the problem I find is that the phrases "souls point/march Heavensward" and "evers rings out our song" point to two different 'voices', if you will. The former is Ishgardian, as they view Halone's Hall as being among the heavens, the latter definitely sounds Dravanian with the use of "song". So, does this song refer to them both, such as the line "Bound fast unto our fate", speaking of how they are, or were, destined to war amongst one another? I really do wonder what the other lyrics are...