Take Two files a suit against 3D Realms for not finishing DNF. 3DRealms argues they never received any money for the game in the first place.
Company Gathers of Publishers announces they will be publishing DNF. 3D Realms sends out new Christmas cards that say the game will come out in 2001.
Source 2: http://www.3drealms.com/news/00card3.html
Duke Nukem Forever is announced by 3D Realms, along with the purchase of the Quake 2 engine. The game is said to be released no later than mid-1998.