Paul McCartney, Mick Jagger and Johnny Rotten will reportedly perform at the opening ceremony of the 2012 Olympic Games. Rumors are swirling that the three have been assembled to form a British supergroup in honor of London-based event. The 2012 Olympics are scheduled to open in London on July 27th next year. The games are slated to last until August 12th. The last time London hosted the Olympics was in 1948.