Yup, I just turned on my Vox and got the little Android character up in the status bar saying "Update available" and I'm downloading it now. Good thing I'd plugged it in this morning to top up the battery. I wish someone from Kobo had posted here what changes we should expect.
Okay, it restarted a couple of times and the final time I get a screen telling me What's New. It's just a software update. I checked for a firmware update and there isn't one.