Sync to Sky
If you want to link Sky with IBL image settings then use the new Sync Sky feature.
In order to use Sync Sky, there must be a Sky in the scene. Sync Sky can be used to impart IBL Rotate and image data to Sky.
When Sync Image is activated, any changes made to the IBL Image will be reflected on the Sky, this way IBL and Sky can match.
Sync Rotate will let IBL Rotation influence the Sky. Hold Shift+I keys to show and use the rotation gizmo.
Deactivate the Sync Sky > Image to only adjust the Sky image to select the desired texture.
Deactivate the Sync Sky > Rotate to keep the current orientation of the Sky and independently adjust the rotation of the IBL.