7th Calamity aether connection?

[MrThinker]

So if each Calamity had a certain aether aspect to it -- water, fire, air, etc -- what was the most recent one?

Saw one video that claimed it was "astral" but another credited a 2.0 teaser trailer as saying it was "dark" but I couldn't find the mentioned source for either. :\

I think the lore book(s) have mention of which calamity was which element, including the seventh. As for which element that was...

Shadowbringers spoilers:

The 7th calamity was all elements tilted towards Astral, and as we find out in Shadowbringers, Astral is Darkness. So both videos are correct. Astral/Darkness being the 'aspect' of growth/activity/chaos is why things went funky with the orange over-aspected crystals and such.

Basically this, but to be more specific

the Astral charge is the effect the power of Darkness has on aether, while the Umbral Charge is the effect the power of Light has on aether, with Light and Dark still being forms of power distinct from the elements.