Sue Cain has sent me a revised list; some teams have pulled out (bear in mind that just one missing person may make a performance impossible) and others have been drafted in. This is the state of play at 17 October:

Boggart's Breakfast (border morris)
Chip off the Old
Lord Conyers Morris Men
Mexican & Latin American dance troupe
Mortimer's Morris
North British Sword & Rapper
Pecsaetan Morris
Sheffield City Morris
Sheffield City Giants
Slubbing Billy's
Rattlejag Morris
Ripley Morris Men

It would be unsurprising if there were not further changes between now and the festival weekend. That's the nature of morris teams.