When is the next Duke Nukem game coming out?

I think the release of Duke Nukem Forever is just epic! I mean the game has been in development for 12 years!! thats a ******* lot of time! However I am a little disappointed :( The game was'nt that great. I don't really care about the graphics. I care more about the gameplay. Duke nukem 3d was the first game I ever played when I was a kid and playing this game did bring some nostalgia. But the game was not as fun as duke nukem 3d was. I think its because the whole thing was very sporadic and rushed. Anyways does anyone know when they are coming out with the next Duke Nukem game? And who makes the duke games now? Is it 3d realms? or have they shut down?