Creators Paul Cornell and Joshua Hale Fialkov have denied the rumours that the two DC Comics titles are due for the chop, reports The Beat.
"Demon Knights isn't being cancelled," writer Cornell tweeted in response to an article listing potential cancellations.
"Could you state that, please? Rumours like this make stores order less."
"I, Vamp is sticking around also," added Fialkov.
Speculation surrounding another round of cancellations in DC's New 52 line has increased following the revelation that G.I. Combat will conclude in December.
September's 'Issue #0' month will see the latest string of cancellations, with Resurrection Man, Voodoo and Captain Atom drawing to a close.