Thanks for the info.
I probably won't be able to afford the pending 400/f4 (I can dream, eh?) but it burns me a bit that they have a lack of decent long lenses. I'd kill for a 400/f4 prime. They seem to have a confusing plethora of bodies at the moment. One assumes the economy has slowed R&D a bit.
Good point about the World Cup. But they might come out with pro-grade 600/f4s so they can be seen in the media coverage of the Cup ... along side of Nikon and Canon.