Wild Africa Trek reservations

does anyone know how long out you can book Wild Africa Trek normally? We have been trying to book for September for about a month now and since we started they have had times released to the end of August but have not added later dates. Just seems odd under a 100 days till the beginning of September and still no dates released for September. Also does not help the cast members at reservations just say "sorry we are not booking for march yet, try back again in a couple days."

I've got the same problem - we are trying to book for November and the CMs can't say when those dates will be open - VERY frustrating! :-(