Depends on who owns the name rights to Drakensang. If it is registered to Radon Labs they could do a CRPG without TDE ruleset, just like Interplay wanted it to do with (Baldur's Gate: ) Dark Alliance. If the fans are willing accept such a product is another thing. I guess not, because Drakensang is heavily connected to the Aventuria background.
But yeah, it seems as if Jan Wergin from Bigpoint doesn't have a clue what product Drakensang exactly is and what TDE license means to the game.
Direct link:
http://www.gamestar.de/interviews/23…_bigpoint.html