I emailed the BBC Information Dept about this and received a prompt reply which stated that NO transmission dates have been set. I was told that firm dates are only set 10-14 days in advance. However, I don't think there is cause for concern. It would be sheer lunacy to broadcast a flagship programme through the Summer, when not only would it lose viewers because of people going on holiday, etc, but it would also be messed around in the schedules due to the World Cup! I reckon it'll begin on the last Saturday in March, like last year.