Don't worry, I've been keeping a close eye on it. I wanted to include 0.5 with the stable update r126, but it was only (and still is at time of writing) a release candidate. That implies there's still some work to be done before the final version 0.5. I would be happy to ship that in a beta release, and will if it's still RC at the next beta, but for a stable update I would prefer not to take a risk on a not-quite-finished version.