According to Dulfy, The second half of season 2 will take lore threads from the first game and tie them together. The remaining episodes of season 2 will be some of the most interesting lore wise.
We're left with this teaser image, I normally don't like to make speculation known but this does look like an Abaddon statue:
For those that don't know, there was a God before Kormir called Abaddon (the God of Secrets). He was the central villain of the Guild Wars 1 series. Kormir usurped him and became the Goddess of Truth. Each dragon has caused massive destruction when they awoke. Jormag killed several ancient Norn Spirits, Kralkatorrik killed Glint, Zhaitan rose Orr and destroyed Lions Arch, if Mordremoth rises how will Tryia change? Teaser trailer: