For west Mich region? I know last time it was out around by Jan or Feb, with the first events in May from what I recall.
I would assume that last years auto-x schedule may be pretty much the same this year (given everything checks out ok and such). I have noticed auto-x schedules for the most part tend to stay pretty much the same from year to year in most cases, at least in the West Mich region.
To double check, I would recommend contacting the auto-x person in charge of the region(s) you plan to compete in.