It depends what portion of the FIS Calendar you are trying to find.
Each of the regions of USSA are currently finalizing their calendaring - It being a top down process- The World Cup schedule is set, the Nor-Am schedule is being tweaked, and the various regional FIS series are at or close to final draft form.
The '09 international calendar will be ratified at the annual FIS Congress in late May - this year - Cape Town, South Africa. Agenda Item 13.1.
More on the old white boys club: http://www.fis-ski.com/uk/insidefis/...tcongress.html
If you are looking for specifics, contact the appropriate regional office of USSA. They should be able to assist you too if you're looking for schedules outside the US for Aug/Sept opportunities in ARG/CHI or AUS/NZE.
No later than mid-June will tentative schedules be available.