Following the release of openMSX 0.8.2, a new version of Nekolauncher is now available for download. This version is also likely the last edition to support Mac OS X 10.4 (Tiger), 10.5 (Leopard) and 10.6 (Snow Leopard). Future editions will focus exclusively on the latest flavor: Mac OS X 10.7 (Lion).
All new features of openMSX 0.8.2 (such as the new mapper types) can be used straight from this launcher. The interface has undergone some drastic changes and some minor bugs were fixed. Last but not least, the installer was slightly improved as well.
Relevant link: Nekolauncher 1.4