I read all about it in the 3D Realms Forums. Needless to say, this piece of news definitely sucks ass, but I'm rather kind of skeptical as to how the company could stay alive for so long without ever releasing a new game in about 13 years or so. I mean the last game they ever developed themselves was Duke Nukem 3D and Shadow Warrior and THAT was back in '96-'97.
Games like Manhattan Project, Max Payne, and Prey do not count, since 3D Realms only published those games, not developed them.
Either way, I grew up with Apogee/3D Realms, and I felt like a piece of computer gaming has died because of this.