Prediction: Snow Leopard release date is June 8
The prediction is based on his research about when WWDC might be. Maybe, but WWDC could be a setting for a beta rather than a final release. I suspect that the ship date will depend more on Mac sales than anything else. If Mac sales are down, they'll figure that everyone is waiting for Snow Leopard so they'll have to ship something. If sales are OK, they'll hold off on shipping the OS until they need a revenue bump.