The blog post reads in part:
Several hours ago the first Mac build completed and I logged on to Second Life beta grid, Aditi. Rebranding from Second Life to Kokua is needed. If there are Mac users that would like to help in this area please respond and I’ll help set up a build environment on your system. I would like Mac users to test and provide look and feel opinions as comments to this post. If there are bugs please report them to our issue tracker.
Having a Mac build of the viewer has been one of the more popular requests made to the Kokua team, so if you have a Mac system and are willing to help out test-driving the new Mac build and reporting back both opinions (via the Kokua blog post) and on any issues you discover (the latter via the Kokua issue tracker, as indicated above), please download the viewer from the Kokua nightly builds directory.
Similarly, if you are willing to help with rebranding the viewer from Second Life to Kokua (which, as noted above, will require a viewer build environment created on your system which Nicky can provide help with setting-up), do please contact Nicky either directly (via in-world IM or through the comments on the Kokua blog post.
(Please do not leave feedback or offers of assistance on this blog, they may not be picked-up.).