Shadowfell (Stormforge Supplement)
From D&D Wiki
Like the Aerinthian Feywild the Shadowfell that touches upon Aerinthia is also changed. Across Neveril the Shadowfell only touches the continent of Aerinthia. Beyond the Storm the connection has been severed. Also the Shadowfell only has a tenuous grasp in many parts of Aerinthia, like Kadishmar, the Meadowlands, Stormguard, and the Shieldlands.
It is unknown how the Shadowfell is affected throughout the rest of Stormforge.