"RIMM has released a MacOS Eclipse plug-in for Blackberry Development: h t t p : //na.blackberry.com/eng/developers/javaappdev/macosx.jsp"
If you download, unzip, there will be a message on macosx 10.7: the powerpc app isn't supported. :)
So those Intel based ( iPhone development machines ) aren't supported, as native.
screenshot
If you download the Eclipse plugin from plugin site:
http://www.blackberry.com/go/eclipseUpdate/3.6/java
they will install a plugin for 5.0 and 7.0 ( couldn't see 6.0) and after Restart will not be available the Blackberry application wizard ( it seems it is completely useless on mac on windows it is working)
As I see right now you must have windows or in Parallel, or in WM or Bootcamp, not sure about Wine.
Also there were a post with SSD is running acceptable speed ( faster than in native windows, but HDD). I didn't tested. Doesn't worth the Fuckberry development a windows retail license.