The conjecture that infinite NIP fields are separably closed, real closed or henselian

Let $K$ be an infinite NIP field. NIP-field conjecture. Then $K$ is separably closed, real closed, or admits a non-trivial henselian valuation. This conjecture generalizes the Stable Fields Conjecture and would reduce the study of NIP fields to separably closed fields, real closed fields, and henselian fields; its status is not specified in the source.