PHILIP JENKINS: The “Secret” Gospels that Have Been Hiding in Plain Sight (History News Network). Did the Gospel of Barnabas know ancient Gnostic sources? Professor Jenkins seems to think so.
Some past PaleoJudaica posts on the Gospel of Barnabas are here, here, and here. More on Jenkins's recent book on the apocryphal gospels, The Many Faces of Christ, is here and here.