User blog comment:LewaMataToaOfMischief/A thought/@comment-1729807-20101129172628

Speculate all you want, Gearbox has already released a statement via Randy Pitchford that any DLC work is still pending - as of DLC4 CNRR's release, they have not really decided on how far they're going to take BL1 before working on Duke Nukem and eventually BL2.