MacOSRumors, based on a reader email, claims big Bluetooth announcements at MacWorld -- including Bluetooth keyboards/mice as well as hints at other Bluetooth-related announcements at MacWorld Expo.
The source of these rumors come from the recent Bluetooth developers conference. Similar rumors already were reported by The Inquirer on Dec 12th based on this same conference. The rumor from that article simply indicated that all Apple laptops and desktops would contain Bluetooth functionality. No mention of Bluetooth'd Keyboards and Mice.