"I'm thrilled but I also don't want to mess it up!
"It is a huge honour and brings out plenty of emotions - pressure, excitement and apprehension but I always have these emotions and then just think I've got to do the best I can. I'm going to give it my best shot, dedicate myself to it and hopefully inspire those people around me in the newsroom."
Herald editor Shayne Currie said Sir John had been asked because of his work and passion in a wide range of areas including sport, business, charity and health work and his love of Auckland and New Zealand.
Sir John has already commissioned about 12 assignments, including a souvenir front cover to celebrate the special edition.
He will also lead the daily news conference on Monday, in which the news, world, sport, business, illustrations and online editors will present their content lists and ideas.
"Sir John will be the first of several guest editors in our anniversary year ... we know he'll kick it off in style," said Currie.