So youve fought titan, some storyline(obviously redacted for spoilers) happened at the waking sands... youve probly heard that the ixali are summoning garuda, but fighting her will be easier said then done given your current situation. You are also interacting with Coerthans for the first time, and actually starting to set up the storyline for the main part of the Heavensward expansion. Yes, this is one of the valleys in the storyline. This valley lasts until roughly level 45. There are a couple of interesting/fun/hard solo instances, and a dungeon in the midst. But once you fight garuda, you immediately move into following up on that storyline from the waking sands and that goes straight on to the end of the ARR line. So a little lull, but one that passes fairly fast.