When there are new releases of OCaml, usually the first comment is about multicore and modular implicit. They are not yet there, but things will start changing soon. Refer to [0, 1] for more information.
: Ocaml-multicore: report on a June 2018 development meeting in Paris https://discuss.ocaml.org/t/ocaml-multicore-report-on-a-june-2018-development-meeting-in-paris/2202
: Modular implicits https://discuss.ocaml.org/t/modular-implicits