This seemed sparse on JIT updates, I read the linked NEWS page and while it had some feature updates, I'm curious how this is going. I believe JIT went from "l

This seemed sparse on JIT updates, I read the linked NEWS page and while it had some feature updates, I'm curious how this is going. I believe JIT went from "likely to speed up most applications significantly" to "may sometimes speed things up, default is off and needs more work." Anyone know the status of using JIT in something like a rails app?