Just saw this on Crackberry. Leaked: BlackBerry Desktop Manager for Mac!!!!! | CrackBerry.com
This looks like a good version of the DM. And it synchs natively with iTunes for those that want to use their Blackberry as an MP3 Player. I find that it just sucks the life out of my battery and it is a pain in the neck to control.
But it would be good for those that want this functionality.