I believe they rolled out firmware updates to devices going back to the HomeHub 4. I can't speak from personal experience, though.
I'm also on VM. I got fed up with waiting and implemented ipv6 with a Hurricane Electric tunnel. It works perfectly and maxes out my bandwidth with ease.
My advice to any VM customer is to switch their POS "super hub" into modem mode and use a decent router behind it. I have used nothing but OpenWRT routers for years. The ipv6 autoconfigures effortlessly if plugged into an ipv6 native connection, and even the tunnel config was straightforward to set up.