Zap2it reports that Monday night (July 12), Ken will present the Top Ten List on Late Show with David Letterman. Could this be a hint as to how Ken Jennings does Monday? If there are sublimal spoilers here, I'm taking them with a grain of salt.
EDIT: Someone already mentioned that one Today segment was rescheduled for Monday, but get this: a certain webmaster who shall remain nameless is also scheduled to appear on ESPN2's Cold Pizza that same morning. Coincidence that all three are happening the same day?