A new dev diary posted today talks about two of the raids, the titans of Baneclaw and Kanaola. Baneclaw is a giant scarab that will roll around and unleash little hellclaw minions at any intruders. Kanaola goes the "big lava worm" route due to its proximity with a volcano. This fight will get tricky as molten hot magma will be rising as the fight progresses.
The raids will have some of the best loot in the game and will be on a seven-day lockout timer when beaten. These titans will become available when the playerbase works to gether up enough Dark Crystite to unlock the instances.