Native OSX Blackberry support in the works?

Macgasm and Ars are reporting that RIM is posting internal job positions looking for Cocoa develoeprs.

The obvious intent is to create a native OSX capable BB client, but part of me wonders what the chances would be of seeing a server app to sit on top of an xServe. Another way to jab at Microsoft while stealing a little bit of Apples thunder, perhaps?