The forums in this section of DUG are no longer accepting new post, but you can still get lots of value from the old posts here. Please visit the active forums to comment/post new questions (choose which product you are interested in):
NAV 5.0 it’s available for download.
Download can be made from https://mbs.microsoft.com/partnersource/downloads/releases/microsoftdynamicsnav50.htm?printpage=false
NAV 5.0 W1 will be in download section in a few hours.
Documentation - http://dynamicsuser.net/files/folders/nav_official/entry85324.aspx
Client - http://dynamicsuser.net/files/folders/nav_official/entry85325.aspx