"For the record, Gearbox is NOT working on a Halo title for Microsoft", so says a recent Tweet from the Halo Waypoint account. This comes in response to some rumours that, to be honest, we didn't bother with as they seemed massively convoluted based on a quote from Gearbox studio head Randy Pitchford recently.
Asked if one of his studio's projects was Halo related, he replied: "Haha! We're not going to talk about anything".
Bang! Rumour explosion. Apparently saying 'No' wasn't an option.