Obsidian Entertainment is working on a new expansion pack for Neverwinter Nights 2, tentatively titled Storm of the Zehir.
According to the Neverwinter Nights Vault, the game will be set after the defeat of the King of Shadows in the original campaign.
It's promised that the game will be non-linear in a way never before seen in the NWN series. Players can form their own party of adventurers instead of being grouped with NPCs who they wish would drop down and die.
There doesn't seem to be an epic quest per se, but instead you're simply dropped into the world and told to get on with it.
So if you want to raid and pillage caravans like pirates, or ally to create a blossoming trade empire, you can. We're told the economy of the world will react to whatever you do.
It sounds a bit like the original Fallout, to be honest, and includes an overland map just like it too.
There's no word on a release date yet, but based on the last expansion pack we expect this some time around Christmas.