I feel this was a pre determined decision but may have been made public now to avoid giving a psycological advantage to the Aussies.But like Sachin told the Top% know when their time comes to hang thier shoes and will will do it themselves rather than people telling them to do so.Kumble has never a great talent like warne or murali but a good learner and thinker. He has never spun the ball as much as warne or murali but it was his thinking that gave him an edge over the batsmen.Great ambassabor for the game and country.