At what point is the language going to get serious adoption? It's mature, unbloated, elegant, and fun to write. The only thing I really think needs improvement is its multicore stuff.
To be clear, it is true that the runtime has a single lock for the GC, so for now, it's not possible to gain physical parallelism from multiple threads. That's being worked on, but I have to say that I rather prefer message passing and I don't know that how we build programs will change much when shared memory threads are available.
http://ocsigen.org/lwt/manual/ http://projects.camlcity.org/projects/dl/ocamlnet-3.7.4/doc/... https://blogs.janestreet.com/announcing-async/
For example you can use them to write HTTP services/clients that scale to lots of concurrent connections without blocking, and the code you write is not that much different from the one you'd write in direct-style.