Ecstatic! I’ve been playing with the concurrent eio primitives and it feels great, comparable to working with Go’s channels and goroutines.

You can equate Go channels to the Eio.Stream type. Goroutines to Eio.Fiber type.

Wonderful! So happy you're excited about this. There are so many great things coming with OCaml 5!

This beta version stabilised several opam packages, fixed several small internal runtime processes (especially the systhreads library), and tweaked the Domain and Effect interface, just to name a few improvements.