The article says that RT is currently using phpBB3, but are sponsoring us to shape up Ninjaboard so it meets the requirements for a community like this one.
Ninjaboard already have a Kunena converter (you find it under Administrator -> Ninjaboard -> Tools, note: Kunena button wont be visible if Kunena isn't installed).
So you can safely use Kunena and switch to Ninjaboard later should you want to.
The only thing you can't do, is start with Ninjaboard and later switch to Kunena as easily. Only solution I'm aware of is this one:
www.joomace.net/joomla-extensions/kunena-converters
So since Kunena is more mature, I do recommend that people that need features Kunena got but we don't, use Kunena until we do instead of switching to Ninjaboard and wait.
Or you could use phpBB3, SMF 1.1 or Agora, we support those too.
Oh and while we don't have full 1.6 compatibility yet, but we only got two bugs left to solve.
One is that we are on MooTools 1.2 in our backend, and some of our js needs the 1.1 compat layer to work, as we try to support Joomla 1.5 wether you got the mtupgrade plugin enabled or not.
Second is the changed ACL in 1.6 that changes the way users are assigned to groups. In 1.5 each user is assigned to a single group, but in 1.6 you got multiple, so we haven't worked out how to solve that yet.
In Ninjaboard 1.2 we'll drop support for MooTools 1.1, and require you to use mtupgrade or similar, so that's when we'll work on 1.6 support once more.
As for rockettheme integration, if you mean by templates, then that's already supported as seen on our demo:
ninjaforge.com/demo/ninjaboard/ninjaboar...emo&id=5&format=html
One of my favorites are Crystalline:
ninjaforge.com/demo/ninjaboard/crystalline/forums
Regarding the sponsor we'll do an official announcement on our site this week with some more information on what this means for you as the user, and perhaps what features that'll come in June thanks to the sponsorship
Cheers!
I've installed Ninjaboard a couple of times to test it, and it looks really good...I was quite amazed by how well the template-blending feature works...the more difficult the template might seemingly make that blending of Ninjaboard and Joomla, the better the results, the better the matching is...