Just installed 0.7 RC8, after uninstalling 0.7 RC7. Either uninstalling RC7 or installing RC8 resulted in the Explorer context menu items (right-clicking a set of files for conversion) for dMC to be removed. I know for sure because I was converting some music earlier today (when RC7 was installed), and after uninstalling RC7 and installing RC8, the context menus disappeared. Easy to fix by running the dMC config utility though, it added the context menus back.
dMC is the latest release, 9a.