Last year it popped up about 3-4 weeks before the event. Check out redtrailracing.com .
As far as tires go, I'm running Schwalbe Kojaks again this year. At the time they were the widest slick I could find that would work well with a wider MTB rim (and they are still pretty skinny). I believe Specialized makes a decent sized smooth tread tire...as does Continental. You don't really have to run slicks though. Most of the folks out there were on knobbies. Those Hutchinson tires that came on your Anthem would probably do pretty well (very shallow tread and low rolling resistance).