The symposium “Greater Magadha: Evaluation and Retrospective” took place a few days ago.
Here’s the agenda: Greater Magadha: Evaluation and Retrospective
and here are the contributions on youtube:
Basically, it’s about Bronkhorst’s concept that the area of early Buddhism and Jainism was geographically distinct from the area of the Brahmins. This and related ideas were published in:
Bronkhorst, J. (2007). Greater Magadha: Studies in the culture of early India . Brill.