I've just released the last alpha version of kwybnc. All missing features (MODE parser, host name lookup and full IPv6 support) are planned to be implemented to 0.5.
kwybnc becomes usable, but it's still alpha. Changes include basic channel management, a bunch of bugfixes and an modification of the internal message dispatching API.
Note: It's still alpha.
kwybnc 0.1 has just been released. Beware: This is an alpha version with a bare minimum of funtionality.