The Void of Sorrow DLC is an end-game content expansion for Blue Fire that includes:

2 new Areas: the Void Gate, a secret wing of the Fire Keep; and the Sealed Land, a forgotten place hidden away for ages.
16 new mind-blowing Voids which will have you prove your limit
1 new epic boss fight where you'll uncover an unbelievable truth
Several hours of new gameplay
Exclusive tunics, swords and a new NPC
Lore expansion & cutscenes