Posting here with news from earlier today. Some of us are still trying to make sure we understand this correctly, but it looks like NWN:EE is going to come out of beta (at least on Steam) on March 27th. Links:
Facebook:
BD Forums: https://forums.beamdog.com/discussion/69508/nwn-comes-out-of-beta-march-27
Steam: http://store.steampowered.com/app/704450/Neverwinter_Nights_Enhanced_Edition/