We've personally confirmed that the Base and Heroic editions are in the US client at this time.
Base Version ($50 USD)
World of Warcraft: The War Within
World of Warcraft: Midnight
Level 80 Character Boost with enhanced gear, reputation progress, and more
500 Trader's Tender
Housing Early Access
Heroic ($70 USD)
World of Warcraft: The War Within
World of Warcraft: Midnight
Level 80 Character Boost with enhanced gear, reputation progress, and more
1000 Trader's Tender
Housing Early Access
Lightstrider Raiment Transmog Set
Lightwing Dragonhawk Skyriding Mount
Epic ($90 USD)
While we haven't personally confirmed the contents of the Epic Edition ourselves, a screenshot being circulated among the community has revealed the following:
World of Warcraft: The War Within
World of Warcraft: Midnight
Level 80 Character Boost with enhanced gear, reputation progress, and more
2000 Trader's Tender
Housing Early Access
Lightstrider Raiment Transmog Set
Lightwing Dragonhawk Skyriding Mount
Voidstrider Raiment Transmog Set
Voidwing Dragonhawk Skyriding Mount
Voidlight Surger Skyriding Mount
Hopeflutter Pet
Doomfeathers Pet
Beta Access to Midnight Expansion
3 Days Early Access to Midnight Expansion
Midnight Housing Bundle
Light-infused Rotunda (Light Gazebo)
Void-Corrupted Rotunda (Void Gazebo)
Light-Infused Fountain
Void-Corrupted Fountain
Alleria Portrait - "The Ranger-General" (Decor)
Turalyon Portrait - "The High Exarch" (Decor)
Arator Portrait - "The Redeemer" (Decor)
Xal'atath Portrait - "The Harbinger" (Decor)
30 Days Game Time
