What will Destiny 2 witch queen be about?

The Witch Queen starts with a new and intriguing mystery. A longtime villain — Savathun, sister of Oryx, the villain from the original Destiny’s beloved Taken King expansion — has somehow acquired the Light, the force that gives Guardians their power.

What is going away in Destiny 2 witch queen?

Probably the most noteworthy things leaving are the locations the Tangled Shore and the H.E.L.M. Wings for the Eliksni and Awoken. What this means is that anything associated with those locations will become unavailable for unlocking.