Darkfall: Unholy Wars launches at the end of November, and Aventurine is letting the details flow free. In a post on the official website, Tasos Flambouras starts off with the question many have been asking ever since Unholy Wars was still Darkfall 2010: Wipes. Short story, they are coming. Darkfall and Unholy Wars are two separate games, which presents the problem of compatibility between the two systems.
Assuming we forced things and made it possible, the DFUW characters would completely destroy the Darkfall Online characters, and I make this comparison to also give you a practical idea of the incompatibility.
Luckily, players won’t have to worry about the grind. According to the blog, players will have no problem becoming viable. Also, Darkfall Online (the current edition) will be shut down to make room for Unholy Wars. Anyone who already bought Darkfall will not have to purchase Unholy Wars. There are plans for Darkfall-related side projects, and characters from the current game are being kept for such a purpose.
(Source: Unholy Wars Website)