Mac now recognizes the PB and fires up Desktop Software (no longer Desktop Manager, I guess) automatically. But options and functionality are very limited -- all you can do is Import Media, which only copies any media you've created on the PB to the Mac. No backup, no sync. But it does create a Finder icon so you can open it as an external storage device and move media to it easily, so there's that.
I must not have the right combination of profile items checked because I don't have the choice of Desktop Software for Mac, or that Blackberry Radio you have either. I have specified that I use a Mac and that I have a PlayBook so I'm not sure what else would be relevant to be invited.