The client extension is an add-on to the standard NWN2 game client that fixes various crash bugs, restores the Internet Server Browser for multiplayer server listings, and adds new multiplayer functionality to the game (for example, a better reply function, command history, and a host of other improvements).
Direct download link for latest version: Link (version 1.0.0.24)
There are also significant improvements to the capabilities of the DM client included (compatible with DMFI, although not dependent on DMFI). For example, you can teleport objects to specific points in other areas without jumping to the area first, and (with some server script support) you can view creatures on the map in a different area than you're currently in.
A brand new, "headless" standalone DM client for NWN2 is also included that allows PW admins to log on to their server without launching the full game DM client.
You can now create a shortcut to directly connect to a PW from the desktop with the +connect argument supported by the included NWLauncher.exe (see the included readme file for details).
10 - A Masterpiece, Genuinely Groundbreaking 9 - Outstanding, a Must Have 8 - Excellent, Recommended to Anyone 7 - Very Good, Deserves a Look 6 - Good, Qualified Recommendation 5 - Fair, Solid yet Unremarkable 4 - Some Merit, Requires Improvements 3 - Poor Execution, Potential Unrealized 2 - Very Little Appeal 1 - Not Recommended to Anyone