I get tired of answering this question constantly. The update is coming but it’s not ready yet. It’s not a matter of missing bells and whistles, it’s getting things to actually work on iOS/OSX when Apple constantly deprecates APIs and puts things in weird places. However, it’s easy to build on your own in the meantime if you’d like to try it, assuming you have a Mac with XCode.
We don’t have any full-time OSX/iOS developers at the moment, so if anyone wants to help out, patches are always welcome. That doesn’t mean the release isn’t coming, just that it takes a little longer than if it were a platform that we use regularly. I added retina support a few weeks ago and someone just submitted a patch to re-add generic HID controller support. Twinaphex is working on everything else as we speak.
As for connecting with the userbase more, we’re always in #retroarch on Freenode IRC, and radius and I post here constantly (look how many times I’ve posted in this very thread, not to mention the number of times I’ve answered this exact question elsewhere). If you’d like to keep an eye on development, you can follow RetroArch’s commit log here: