Apple PDA/Digital Devices?
PowerPage posts a story about various handheld devices seen around Apple's campus:
The devices have been field tested by various staff members over the past few months. It is important to realize that these aren't simply re-badged Palms or Palms with silly clear enclosures - they are real Apple iron.
MacOS Rumors also has a story regarding upcoming Digital Lifestyle devices which is very vague:
New information is also becoming available through the grapevine about Apple's next Digital Lifestyle device. There are at least five different such projects underway at Apple right now, up to three of which could ship this summer, so there's plenty of uncertainty to go around...