Kavin Rowe reviews a number of texts in New Testament Theology (NTT) in JBL (125:6), and finds that “recent work in NTT has reached the point of consensus on the importance of the OT for NTT: readings of the NT that downplay or even erase the fundamental historical and theological significance of the OT for the New contradict the NT itself to such a degree that they cease to be NTT.” “Marcionite hermeneutics” is on its way out. Further, “there is widespread agreement that the import of the OT extends far beynd citations and/or allusions; the entirety of the OT must be taken into account.”
It might be better news if NTT yielded altogether to BT, but one is happy for smaller favors.