Yup.
I am not involved with the reasoning, but there are more runs per day than the other non-5-year anniversary events. So I think we traded the extra low-turnout-Tuesday for more runs Wed. and Thur.
The dates are correct for the official days however if you want to come a day early there is nothing stopping you. I'd guess that there will be quite a few people in town before the event.
We decided to go a day short mostly because of the schedules of the guys putting the event on this year. It was just too hard to get that many days off for all of us.