All four Gospals clearly mention Judas as a traitor, not just because he handed over Jesus to the soldiers, but because at last supper Christ informed Judas about his future deed, and also said "It would have been better if the traitor was not born". Secondly any secrets between Christ and Judas would not have ended in Judas talking his life ultimately. Even if there is a new Gospal, it is still against the common four. At the end its the faith that prevails not any revelations.