As announced on Bioware’s Neverwinter Nights For Linux page, the official, non-beta Linux client of NWN has (finally!) been released. The game requires a Windows NWN CD or an installed Windows NWN (or see below).
Following the announcement, TuxGames made their own announcement that they plan to ship their Linux-friendly version of NWN starting Monday. They will also begin shipping the strategy guide, world builder guide, and the expansion pack: Neverwinter Nights: Shadows of Undrentide.