@cynric,
Please be patient - we're working to try and release new COP-enabled bootloaders for the minis and 4g greyscale as soon as we can. For now, you'll need to stick with the last daily buiild before COP support was added.
@Llorean,
The bootloaders embedded in ipodpatcher are also available as standalone downloads - they're needed by people who either want to or have to compile ipodpatcher themselves, and they're also downloaded by rbutil (they're not embedded in rbutil).