Fleetwood Mac scare

Fleetwood Mac have announced that their upcoming 14-date tour of Australia & New Zealand has been cancelled so that bassist John McVie can undergo cancer treatment. Fleetwood Mac have issued the following statement regarding the cancellations: 
 "We are sorry not to be able to play these Australian and New Zealand dates. "John McVie, one of the co-founding and original members of Fleetwood Mac, is scheduled to be in treatment for cancer during that period of time. "We hope our Australia and New Zealand fans, as well as fans everywhere, will join is in wishing John and his family all the best." 
 There has been no word yet as the status of the Las Vegas show that the band has scheduled for 12/30/13.