Steve- You are fast. There is barely a whisper of the new schedule and a few seconds later you have it posted. I like the new site but I hope you are not turning this into a 9 to 5 job. Keep up the good work and come on late April.
I know that the schedule is firmed up on the motorcycle track day that I have signed up for in April. They have a several dates already scheduled. Good question though. I was curious myself when I saw the schedule.
The reason it's tentative is simply because there's not yet a signed contract in place. The representatives from TC indicated that was likely to happen fairly soon. The track still also has to be certified for racing, so we can't race there (insurance) until that happens.