I can hear some of you groaning already (Icelandic Woman ), but after many years of waiting, they are getting closer to completion.
As with v5, I have created a test forum so you all can see what's changed. It (the software) is NOT fully functional yet. There are bugs, which I report as I find them. If you think you've found one, let me know on the feedback board on the test forum. There's only the default theme as well, and I'm not currently able to create others.
Anyway, go check it out if you like. You can use your same usernames as here to avoid confusion (though you don't have to).