Kasper from Appleinsider seems to think the Mac Mini may be coming to an end.
See the Apple Insider speculation here: http://www.appleinsider.com/articles..._mac_mini.html
"Therefore, it comes as little surprise that sources, for whom AppleInsider holds the utmost respect, are now pointing towards the mini's impending demise. For it's according to those people that the miniature Mac will soon follow in the wake of its similarly-proportioned counterparts of years past: the PowerBook 2400, the PowerMac G4 Cube, and, most recently, the 12-inch PowerBook.
Whether Apple will squeeze another revision from the mini, and how long it plans to allow existing models to linger, are both unclear. But as the extended Memorial Day break dawns upon us, the point being driven should be clear:"