ReasonML purely as a syntax layer on top of OCaml is still being updated and released[1]. Incidentally, I'm one of the maintainers of that project too :-)

With this Melange release, we're hoping to somewhat revive ReasonML and channel some folks back to the community from the perspective of a vertically integrated platform[2] that has seen major investment in the past few years.

[1]: https://github.com/reasonml/reason [2]: https://ocaml.org/docs/platform