From the release:
The Nether Realm, a new expansion for Talisman is now available at your local retailer and through our webstore! The Nether Realm was designed by Jon New, the man behind the Talisman-dedicated fansite, Talisman Island. Jon is one of Talisman’s biggest fans, and he has been a big supporter of the Talisman fan community for many years. It has been great to partner with him on The Nether Realm expansion.
The Nether Realm offers three new Alternative Endings for Talisman, along with new Nether cards. For more on The Nether Realm, here’s expansion designer Jon New: