Before you journey to the Shadowlands, you may want to spend your remaining moments in the mortal realms seeking out a few rewards that will no longer be obtainable (or will be more difficult to acquire) in the next expansion.
Yes, you will still be able to play through Horrific Visions once Shadowlands goes live!
You’ll be able to join Island Expeditions and Warfronts, even after Shadowlands goes live.
Updated Aug. 18: The achievement Phenomenal Cosmic Power will no longer be obtainable once pre-patch goes live (we previously stated that this would go away once Shadowlands went live). This is due to certain Rank 4 Essences no longer being available to earn after pre-patch (e.g. Vision of Perfection).