I think it is important to point out here that we don't consider ourselves as "WP and SA killers" or anything. In fact we have been in touch with a prominent member of the Six Apart family, laying down plans for our two communities to work together to improve blogging for everyone.
Our hope is that we can have the same kind of relationship with Automattic, and WP.org. From what I have seen already that shouldn't be a problem either.
Thanks for the mention, and for the good luck wishes. We are very excited to see what a more community driven development model can produce, and of course what we can do while pushing technology to its limits.
Things will get very interesting when the Developer Preview ships, and a larger community of users can see what Habari has to offer.