Organizers have opened up registrations for Macworld|iWorld, a rebranded Macworld Expo. The event is scheduled for January 26th through the 28th at the Moscone West center in San Francisco. The name change is meant to emphasize the iOS side of the gathering. iWorld will also include new Music Experience and Film Event tracks, featuring media and performances created with Apple products, as well talks with some of the people involved. One Film Event session, for instance, will bridge a screening of the unaired South Park pilot with a Q&A hosted by staff from the s