Well, the game was delayed, and was supposed to be released fairly soon. so there should already have been lots of info.
if they show new skills, it will be in job trailers, like they did with Nin. But i think they will want to be a bit more secretive this time, cause ppl figured out how to play nin, before it was even released, by analyzing trailers and data-mining.
as for new skills for current jobs, i guess we'll see when the game launches, or ppl data mine.
High lv leve quests, probably just means lv 51-60.
but yah, they should start creating some real hype, soon....or there's nothing more to hype