... sorry man, didn't mean to rain on your parade. I am a huge duke nukem fan but at some point we have to face reality... although if it ever is released (and doesn't suck) I Would love to be proven wrong by such a pleasant surprise.
It is finally done with development, with playable demos. While I can't say much about the quality, I can say with some confidence that it should be released soon.
I also feel that BD will be released before 2012. I don't particularly see it being better than SB as I am seeing many people post. I do expect it to have some parity with the Nehalem architecture though, with similar IPC to that. I guess if clock speeds are high enough it could beat SB pretty well, but since it is on a Gate First HKMG process and SB is on a Gate Last HKMG process, I don't really expect the Zambezi die to clock much faster than a Sandybridge die. Even though the Zambezi die is likely designed to clock higher, it is still at an inherent process disadvantage.