BitWise 1.7.2 was released today, featuring some minor enhancements and many bug fixes. One change that will be very noticable is that BitWise now has new sounds, kindly developed and donated by FreakyFwoof. For Linux and Mac OS X users, the IP address detection has been vastly improved, now querying the interfaces directly rather than relying on /etc/hosts. The behavior on Windows has always been correct and has not changed. You can read about the rest of the changes in the BitWise Version History.
You can grab the release from the BitWise IM Download Page.