Coleman's finiteness conjecture for curves with special-type Jacobians

Let $g$ be a sufficiently large genus, and let a smooth projective curve of genus $g$ have a Jacobian of ST type, as in the source. Coleman's conjecture. Only finitely many smooth projective curves of genus $g$ have Jacobians of ST type. This is presented alongside Oort's proposed generalization concerning special subvarieties of the Torelli locus; the source does not state whether Coleman's conjecture has been resolved.