Winnie Madikizela-Mandela came to the gates of Mandela's hospital to address crowds, and told them "Tata is sitting up."
"It is true that he is getting better, it is true that he's now sitting on a chair and is able to communicate with the family."
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The victim, a man in his 40s, is being treated in hospital for "life-changing" injuries after the attack by two men who remain on the run.
Heavy security presence as 64,000 fans gather at the Stade de France stadium for the Six Nations rugby match between France and Italy.
Today's rain will clear into the North Sea tonight, but winds will stay strong, with showers feeding in to the north and west.