The one man you won't hear from is Fletcher. Few people in the world have heard him speak, although it's rumoured that he can.
Tim Nielsen can't stop. John Buchanan limited himself to the odd acidic waft from beneath that crowbar moustache, but his teams had McGrath and Warne to speak for them. Nielsen evidently thinks the pre-series sledge is down to him. He's warned South Africa over 'cheap talk'. Which is interesting considering they have have yet to say anything. When Neilsen really did need to speak out, as Ponting was copping it all for India, he chose to do so via the fearless forum of his Cricket Australia blog.
Australia versus South Africa is a contest. Fletcher versus Neilsen is over already.