Think we're heading over on the Saturday to make a long weekend of it. Eurostar is surprisingly cheap. For example, if you wanted to go early Tuesday and come back the same evening, it would cost only £29 per person (if booked now). So, that would mean a minimum £50 day out for the Expo, which isn't bad value at all considering.
i wouldn't say a new shuffle is headlining stuff tho'. I think it will be a valuable update on the intel-switch progress. Bear in mind the rumours suggest they are working overtime to get ahead of schedule, I think more detailed announcements could be made on the first intel model dates but not the actual models.
One main reason for me to go is see Jobs live (he is keynoting, right?). Having watched his WWDC speech, I thought it was a great demo of interactive public speaking. Shame about what he said though.