His co-star Craig Charles (Dave Lister) recently told Real Radio that digital channel Dave had commissioned another series of the sci-fi sitcom.
In a statement on his official site, Llewellyn wrote: "The whole point was that I was told not to saying anything. [Series co-creator] Doug [Naylor] told me, face to face, 'Don't tweet this, Bobby. Not yet'. So I didn't."
Regarding Charles's announcement, he added: "You'll got to love him, he knows to spin the scoop. So yes, we are making a new series, commissioned by Dave, not a special or a movie or a one-off dooberry."
Llewellyn also suggested that the new series will be filmed with a live audience, unlike 2009's three-part special Back to Earth.
"The plan at the moment, and this could change, is that we record [it] in front of an audience," he confirmed.
Red Dwarf originally ran for eight series on BBC Two between 1988 and 1999.